Question

A kangaroo hops 2 kilometers in 3 minutes. At this rate, how many minutes does it take the kilometer to hop 21 kilometers?

Answer 1

31.5

Explanation:

2k(3) meaning for every 1k it takes 1:30 seconds, but working in seconds is different than working in regular decimals since it is out of 100.

SO 21k/2 = 10.5

10.5(3) = 31.5