120. A man saves 20% of his income. If his
expenses be increased by 35%, by what per cent
his income is to be raised so that he can save 10%
of his income?
(A) 20%
(B) 30%
(C) 25% (D) 22%
Answers
Answered by
9
Step-by-step explanation:
Lets assume his income to be 100.
He saves 20%, so his expense is 80.
if his expense is increased by 35%, his new expense is 80 x 1.35 = 108
To save 10% on 108.. his income should be 108 / (1-10%)
= 108 / 0.9 = 120
Thus his income should increase by 20%
Answered by
2
calculating savings of the person
explanation
let the total income of the man be 100 units
so if he saves 20% of his income
i.e
100*20/100
=20
so after saving the 20 units from his income , now his total expenses is = 80 units
now as mentioned in question that the expense is increased by 35%
so, 80*35/100
108
so now as in question it is asked that in order to save 10% on his expenses that is 108, what should be his income
so, 108/0.9
=120
thus his income should increase by 20%
Similar questions