Benny can stack 42 cups in 24 seconds. Does this mean he can stack 70 cups in 40 seconds?

1 Answer
Mar 4, 2018

Yes, if he keeps stacking the cups at the same rate.

Explanation:

42 in 24 seconds
70 in 40 seconds

To examine weather this statement is true or not, just do the cross multiplication:

42*40=24*70
1680=1680

Therefore, given that he keeps stacking the cups at the same rate, the statement is true.