Percentage and Ratio Problems Flashcards
6 cards from real Numerical Reasoning practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Percentage and Ratio Problems flashcards as text
A mixture contains flour and sugar in the ratio 7:3. If there are 210 grams of flour, how many grams of sugar are there?
Answer: 90g
If flour = 7 parts = 210g, then 1 part = 30g; sugar = 3 parts = 90g.
After a 20% price increase, a product costs $96. What was the original price?
Answer: $80
Original price = $96 / 1.20 = $80.
A salesperson earns a 5% commission on sales. If their monthly commission was $875, what were their total sales?
Answer: $17,500
Total sales = $875 / 0.05 = $17,500.
Three partners invest in a business in the ratio 2:3:5. If the total investment is $50,000, how much does the partner with the middle share invest?
Answer: $15,000
Total parts = 2+3+5 = 10; middle share = 3/10 × $50,000 = $15,000.
A school has 480 students. The ratio of boys to girls is 5:7. How many girls are in the school?
Answer: 280
Total parts = 5+7 = 12; girls = 7/12 × 480 = 280.
A product's price drops from $250 to $175. What is the percentage decrease?
Answer: 30%
Decrease = (250−175)/250 × 100 = 75/250 × 100 = 30%.