Question

lightning strikes the earth 1000 times every ten seconds. how many seconds does it take forr it to strike 7250 times?

Answer 1

72.5 seconds

Explanation:

7250 ÷ 1000 = 7.25

7.25 x 10 = 72.5 seconds

Answer 2

72.50 s

Explanation:

Lightning strikes the earth 1000 times every 10 seconds. First calculate time taken for each lightning to strike the Earth by unitary method:

1000 times lightning takes 10 s

1 time lightning would take
`(10s)/(1000) = 0.01 s`

Multiply 7250 with this time. It will yield amount of time in which lightning would strike 7250 times:

`(10s)/(1000)* 7250 =72.50 s`