Question

Marci finished the one hundred yard dash nine-tenths of a second faster than Eva. If Eva finished in twelve and four-fifths seconds, how long did it take Marci to finish?

thirteen and seven-tenths seconds

eleven and nine-tenths seconds

fourteen and two-ninths seconds

eleven and thirteen twenty-fifths seconds

Answer 1

@sodukogirl13

Answer 2

let e=eva
12.8=0.9e
does that help

Answer 3

no

Answer 4

but thanks for trying

Answer 5

you just need to divide both sides by 0.9