What is it?
Formulae question test your abstraction capabilities. Are you able to extrapolate a trend or a result from a set of data? Are you able to break down problems, identifying drivers and directions of causality?
- Which of the following formulae best approximates ....?
Forman Fisheries is engaged in packaging shrimp and other fish. There are four grades of shrimp, from A to D, reflecting their size and taste. Below are some key productivity indicators for Forman Fisheries in the shrimp packaging activities:
|Grade A shrimps packed in a month (a)||3,600|
|Grade A shrimps share of total shrimps (b)||12%|
|Total boxes per year (c)||8,900|
Assuming that all boxes contain the same quantity of shrimps, which of the following formulas best approximates how many boxes of non-grade A shrimps were packed in the last month?
Tips & Tricks
Formula questions are about extrapolating a formula that should work with all numbers. However, sometimes answers are presented through formulas with numerous simplifications that might make it difficult to tell whether the numbers are correct. A trick that could work in order to double-check results is replacing numbers in the table with simple ones, coming up with a solution and then plugging it into the answer options to see which one gives the right result. For example in this case, assume:
- Grade A shrimp share of total shrimp (b): 10%
- Total boxes per year (c): 1,200 (or )
Since all boxes have the same size, non-grade A boxes will be .
If you know that all your results should be 9, plug in the numbers above in the answer options above and check in which of them you get 9. This trick works very well when the formulas involve high degrees of simplification.