A person spends 87.5% of his income. His income increases by 59% and expenditure increases by 67%. Find his percentage increase or decrease in savings

A person spends 87.5% of his income. His income increases by 59% and expenditure increases by 67%. Find his percentage increase or decrease in savings.

(a) 12%

(b) 4%

(c) 3%

(d) 13%

 Sol: