Question

Daca a/3=7/10 calculati 100a

Answer 1

a/3=7/10
cross multiplying
it becomes, 10a=21
dividing by 10 both sides
it becomes, a=2.1
we are asked to find 100a but a=2.1,
then, 100a=100✖2.1
100a=210
thereafter, 100a=210