Question

Suman saves 10% of her monthly salary. Now her expenditure increases by 30% and savings increases by 50%. The present increase in her salary is

पर्याय

• 25%

• 30%

• 32%

• 40%

Answer 1

32%

Explanation:

Let initially salary of suman is ₹ x.

then, saving of suman `="x"xx10/100=0.1"x"`

expenditure of suman`="x"xx90/100=0.9"x".`

Now, saving of suman = 0.1x × 1.5 = 1.15x

expenditure of suman = 0.9x × 1.3 = 1.17x

New salary = (1.17 + 0.15)x = 1.32x,

Percentage increase in salary

`=((1.32"x"-"x"))/"x"xx100=32%`