Kong took 15\%15%15, percent fewer seconds than Nolan took to complete his multiplication timed test. Kong took 858585 seconds. How many seconds did Nolan take?

Answer 1

K = 85 = N - .15(N) = N(1-.15) = .85N

N=85/.85 = 100

it took Nolan 100 seconds to complete the multiple choice test

15% less =100-.15(100) 100-15 = 85 seconds = the time it took Kong to complete the test