Question

kailash used to spend 85% of his income. when his income increased by 36% his expenses also increased by 40% of his earlier expenses. how much percentage of his earning he saves now?

Answer 1

Let income of Kailash be x.
therefore expenditure of Kailash = 0.85x
his income increased by 36%.
so new income of Kailash = x + 0.36x
= 1.36x
his expense also increased by 40%
therefore new expenditure of Kailash = 0.85x + 0.34x
= 1.19x
therefore savings of Kailash = 1.36x - 1.19x
=0.17x
% profit of Kailash = (0.17x÷1.36) ×100
=12.5%
so Kailash saved 12.5% of his income......