Question

Luis purchased a laptop computer that was marked down by 2/5 of the original price. What fractional part of the original price did Luis pay?

Answer 1

let the whole marked price be 1.

then Luis pays 1- 2/5.

1-2/5

=1/1*5/5=5/5

=2/5*1/1=2/5

=5/5-2/5

=3/5

thus Luis pays 3/5 of the original price