Question

The difference between 72% of a number and 7/5 of the same number is 125.8. What is 40% of that number

Answer 1

Answer:

Let the number be =x

Then 72%of x=72x/100

Now 7/5 of x=7x/5

Then, 7x/5-72x/100=125.8

(140x-72x)/100=125.8

68 x /100=125.8

68x=125.8*100

X=12580/68=185

Thus, 40% of x = 40/100*185

=2/5*185

=2*37

=74 ans.