The table shows the number of machines (in thousands) sold by dealers A, B, C, D and E during six months of 2022.
60% of the total number of machines sold by dealers C and D in January is approximately what percent less than the total number of machines sold by dealers C and E in March?
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → 49%
"A is what percent less than B" means \(\frac{B-A}{B}\times100\): the difference is taken as a percentage of the value it is compared with.
C + D in January \(=640+520=1160\) thousand
60% of 1160 \(=0.6\times1160=696\) thousand
C + E in March \(=640+720=1360\) thousand
Percent less \(\displaystyle=\frac{1360-696}{1360}\times100=\frac{664}{1360}\times100\approx48.82\%\approx49\%\)