Question

by how much is 3/5 of 350 greater than 4/7of210

Answer 1

Let
$a = \frac{3}{5} \times 350$
$b = \frac{4}{7} \times 210$
$a = 210$
And
$b = 120$
Therefore
a is greater than b by 210-120.
Ie. 90

Answer 2

3/5 of 350
= 3/5 × 350
= 210

4/7 of 210
= 4/7 × 210
=120

It is greater by
210 - 120
= 90