Question

5. Adam the Ant and Anna the Ant dared each other to grab a moving bicycle wheel. Adam the Ant hung on for 20 seconds, in which time the wheel made 30 turns; then, he fell off. Anna the Ant hung on 12 seconds longer than Adam the Ant. How many times did she spin around on the bicycle wheel?

Answer 1

48

Explanation:

Rate of change;

20 seconds 30 turns

30/20 is the number of turns per second.

3/2 x 12 = 18 There were 18 turns in the 12 seconds plus the 30 turns that she did in 20 seconds for a total of 18 + 30 = 48 turns