Question
A person saves 25% of his monthly income. If his monthly
is increased by 35% 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 = 0.25 × 100x = Rs. 25x Monthly expenditure = 100x - 25x = Rs. 75x His increased monthly income = 1.35 × 100x = Rs. 135x His monthly expenditure now = 135x - 25x = 110x Percentage increase in expenditure = [(110x - 75x)/75x] × 100 ~ 46.6%
Let 0 < x < 1, Then the correct inequality is
What is the rate percent per annum?
Quantity I. Sum of money becomes four times in five years at simple interest.
Quantity II. The dif...
Quantity I. The perimeter of a triangle whose sides are 17 cm, 13 cm and 23 cm.
Quantity II. The perimeter of a square whose diagonal is 19 Â cm.
Quantity I. The volume of a cube whose surface area is 216 cm²
Quantity II. The volume of a cuboid whose sides are 8 cm, 9 cm and 13 cm.
What is the rate percent per annum?
Quantity I. Sum of money becomes four times in five years at simple interest.
Quantity II. The differe...
Quantity I. The volume of a cube whose surface area is 216 cm²
Quantity II. The volume of a cuboid whose sides are 8 cm, 9 cm and 13 cm.
...Quantity I. The perimeter of a triangle whose sides are 17 cm, 13 cm and 23 cm.
Quantity II. The perimeter of a square whose diagonal is 19 cm.
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