Question

Matthew’s 4th grade science experiment included counting the number of popcorn kernels that popped after 3 minutes in a microwave. If 126 kernels popped and 38 kernels did not pop, what was the percent of kernels popped to the nearest whole percent?

Answer 1

77%

Explanation:

step 1

Find out the total kernels

The total kernels is equal to the sum of the kernels popped plus the kernels not popped

so

`126+38=164`

step 2

Find out the percent of kernels popped

we know that

The 164 total kernels represent the 100%

so

using proportion

Find out what percentage represent 126 kernels popped

`(164)/(100\%)=(126)/(x)\\\\x=126(100)/164\\\\x=77\%`