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in like a month or so.

in like a month or so.

Last Update: 2016-10-27

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* miss you bad for a month or so *

♪ miss you bad for a month or so ♪

Last Update: 2016-10-27

Usage Frequency: 2

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some processes are rapidly affected by atmospheric behaviour, such as dryland agriculture, and the rate at which grasses and brush dry out, and the relevant time scale is a month or two.

some processes are rapidly affected by atmospheric behaviour, such as dryland agriculture, and the rate at which grasses and brush dry out, and the relevant time scale is a month or two.

succeeding in numerical reasoning tests 175 vehicles does not change, is this not just another way of saying that greyhound carried 10% more passengers? this immediately simplifies our calculation: 289 million + 10% = 289 million * 110% = 289 million * 1.1 now let us look at the answer options again: a) 317. 9 million b) 356. 6 million c) 232. 07 million d) 260. 1 million answers c and d can be immediately ruled out because those numbers are smaller than the 289 million in the table, which is impossible when the utilization increases. answer b has a greater number than in the table, but if we estimate 10% of 289 million (about 30 million, or exactly 28.9 million) we will immediately see that answer b's 356. 6 million is simply too large an amount, which leaves only answer a as a feasible option. the correctness of answer a can also be verified very quickly, with a simple subtraction: 317. 9 million - 28.9 million = 317. 9 million - (17.9 million + 11 million) = 300 million 11 million = 289 million the above calculation also shows an example of how to make subtractions easier. in this example, we reformulated 28.9 million as 17.9 million + 11 million so it became much easier to first subtract 17.9 million from 317. 9 million (leaving the round number of 300 million), and then deal with the rest. equations equations might sound too mathematical, yet they are a brilliantly inventive way of dealing with problems where multiple calculations must be made. consider this: q. there are 13 600 customers in a café in a month. out ofthem, 45% order coffee; ofthese, 30% opt for coffee with milk, of whom 200 ask for soy milk. of the other customers, 25% ask for espresso macchiato, for which 60 millilitres ofregular milk is used per customer. how much reg- ular milk is used in a month for espresso macchiatos? a. 245. 4 litres b. 245. 4 millilitres c. 24.54 litres d. 29.54 litres one way of approaching the problem would be to perform a series of individual calcula- tions. first, we would calculate 45% of 13 600 customers to get 6120, then 30% of 6120 to get 1836, then we would subtract 200 from that to get 1636, then we would calculate 25% of this to get 409. finally, we would multiply 409 by the amount of milk (60 ml, or 0.06 litres) and get the correct result, which is answer c. this is all perfectly reasonable. however, by denoting the amount of milk used for macchiatos (which is the answer we are looking for) by x, we can create an equation which will make the calculation faster: x = (13 600 * 0.45 * 0.3 - 200) * 0.25 * 60 (where 0.45 equals 45%, 0.3 equals 30%, and 0.25 equals 25%) we can further simplify the equation:

174 succeeding in numerical reasoning tests q. how many passengers would greyhound carry in 2014 if its average vehicle utilization improves by 10% and its number ofvehicles doesn't change? a) 317. 9 million b) 356. 6 million c) 232. 07 million d) 260. 1 million again, let us first consider the less innovative (and therefore more time-consuming) way of calculating the correct answer. the data we will work with are: • number of passengers in millions in 2013: 289 • average vehicle utilization in 2013: 73% • the fact that average vehicle utilization in 2014 2s forecast to increase by 10% the first thing we would do is calculate the new utilization. an important point to remember here is the difference between percentage change and percentage point change, as discussed above. new capacity utilization = 73% * (100% + 10%) = 73% * 110% = 73% * 1.1 = 80.3% one mistake we could make here is equating the 2014 figure for passengers carried with the following (i.e. confusing the basis and new value discussed earlier): 289 million * 80.3% = 289 million * 0.803 = 232. 07 million (note that this is one of the answer options) why is the above calculation incorrect? we must bear in mind that the number 289 million is actually equal to 73% of the total vehicle capacity of greyhound, since its aver- age utilization according to the table was 73%. we also know the new capacity utilization figure (80.3%), but we must also calculate total capacity, the basis (x). we know the following: x * 0.73 = 289 million (73% of the total capacity is 289 million passengers) let's solve the equation for x: x = 289 million / 0.73 = 395. 9 million we can now calculate the number of passengers transported at 80.3% capacity utiliza- tion: 395. 9 * 0.803 = 317. 9 million answer a is in fact the correct answer. while the above series of calculations were all correct, we must always be suspicious when so many raw calculations are required to get to the correct answer. do not forget that numerical reasoning in epso exams is not primarily a mathematical exercise, so this might be a hint that an easier solution may exist. we need to make two observations here: some of the data is irrelevant • the "distance" between the values in the answer options allows for estimation let's go back to the problem. as the question referred to average vehicle utilization, we immediately started to work vith that number. however, we should reconsider the meaning of this term. if average vehicle utilization increases by 10%, and the number of

Last Update: 2021-04-21

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