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?

77%

Step-by-step 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

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

answer: 2x + 2 − 2 = 10 − 2; subtraction property of equality

step-by-step explanation:

2160ft3

step-by-step explanation: