Question

Sarah jumps rope to keep in shape. she jumps and average of 20 times in 15 sec. which of these describes her jump rate

60 min per jump

80 jumps per min

80 min per jump

60 jumps per min ​

Answer 1

80 jumps per minute

Explanation:

15 seconds is 1/4 of a minute, so to find out how many jumps she does in a minute, we multiply how many jumps she does in 15 seconds (20) by 4

20 x 4 = 80

So Sarah jumps 80 times per minute