Question

calculați :90:10(15:3)×100

Answer 1

90:10(15:3)x100=
90:10x5x100=
9x5x100=
45x100=
4500

Answer 2

$90 : 10 * ( 15 : 3 ) * 100 = 90 : 10 * 5 * 100 = 9 * 5 * 100 = 45 * 100 =\boxed{4500}$