with Answers (All Topics)
• Percentage
• Profit & Loss
• Time & Work
• Time-Speed-Distance
• Ratios
• Numbers System/Series
• Probability
• Averages
• Interests
• Geometry
• Algebra
, Covers: Percentages, Profit & Loss, Time & Work, Time-Speed-
Distance, Ratios, Number Series, Probability, Averages, Interest,
Geometry, Algebra
1. Percentage
A number is increased by 20% and then decreased by 20%. What is
the net change?
Answer: Net change = -4% (overall decrease).
2. Percentage
Find 25% of 640.
Answer: 25% of 640 = 160.
3. Ratio
The ratio of two numbers is 3:5 and their sum is 64. Find the
numbers.
Answer: Numbers = 24 and 40.
4. Ratio
If A:B = 4:7 and B = 35, find A.
Answer: A = 20.
5. Average
Average of 5 numbers is 42. Find their total.
Answer: Total = 210.
6. Average
Average of first 10 even numbers.