Ratio and Proportion
Let S.R. and P be the respective amounts spend by the sales, research, and packing departments. Then S:R is 1:2 and R:P is 4:1.5. In order to combine these into a triple ratio for S : R : P, we need to have the same number for R in both the ratios S : R and R : P. If we multiply each term of the ratio s : R by 20, we obtain 20:4. Therefore we can express the triple ratio as 20:4:1.5. However, this is not one of the given answers. If you multiply every time of a triple ratio remains unchanged. So multiply each term by 2, and the triple ratio becomes 40:8:3, which is (1).
Related MCQ Ratio and Proportion
MOCK TEST SERIES