Question
A person saves 30% of his monthly income. If his monthly
is increased by 45% and he still saves the same amount as before then find percentage increase (approximate) in his monthly expenditure.Solution
Let monthly of person is Rs. 100x Monthly savings = 0.30 times; 100x = Rs. 30x Monthly expenditure = 100x ndash; 30x = Rs. 70x His increased monthly income = 1.45 times; 100x = Rs. 145x His monthly expenditure now = 145x ndash; 30x = 115x Percentage increase in expenditure = [(115x ndash; 70x)/70x] times; 100 ~ 64.3%
More Percentage Questions
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
? = 41.92% of 49.96% of (45.07 1.97 – 4.98 2.03 )
(15.15 ×  31.98) + 30.15% of 719.99 = ? + 124.34
15.2 x 1.5 + 258.88+ ? = 398.12 + 15.9
784.69 + 86.96 ÷ 29.01 = 40.01 + ? + 367.88
(29.892 × √290) + 32.98 × 6.91 = ?
(15.87% of 79.98 + 19.69% of 64.22) × 4.83 = ?
 (3/5) of 3025 + (18² + 12²) = ? + 22.22% of 1125
24.75% of 20.125% of 30.05% of 2196.06 = ?Â
(799.81/64) ÷ (10/799.92) × (129.84/130) = ?
...
Relevant for Exams:
