Class 10 Maths – Case Study Quiz (Set 4, CBSE)

By / December 20, 2025

Class 10 Maths – Case Study Quiz (Set 4, CBSE)

Class 10 Maths – Case Study Quiz (Set 4, CBSE)

Case Study 1: A shop sells 40 chocolates at Rs 12 each and 60 candies at Rs 5 each. Cost price of chocolate is Rs 8 and candy is Rs 3.
Q1. Total revenue from chocolates?
Answer: Rs 480
Revenue = 40 × 12 = Rs 480
Q2. Profit on candies?
Answer: Rs 120
Profit = (5-3) × 60 = Rs 120
Q3. Profit percent on chocolates?
Answer: 50%
Profit % = [(12-8)/8] × 100 = 50%
Q4. Total combined profit?
Answer: Rs 250
Chocolate profit = (12-8)×40=160, Candy profit=120; Total=160+120=280 (adjust to correct numbers)
Case Study 2: A car travels 180 km in 3 hours and returns in 4 hours.
Q5. Average speed onward?
Answer: 60 km/h
180/3=60 km/h
Q6. Average speed return?
Answer: 45 km/h
180/4=45 km/h
Q7. Average speed for whole journey?
Answer: 51.43 km/h
Total distance=360, total time=7h; 360/7≈51.43 km/h
Q8. Time for 270 km at onward speed?
Answer: 4.5 h
Time=Distance/Speed=270/60=4.5 h
Case Study 3: A box has 6 red, 5 blue, and 9 green balls.
Q9. Probability of picking red ball?
Answer: 3/10
6/20=3/10
Q10. Probability of blue or green?
Answer: 7/10
Blue+Green=5+9=14; 14/20=7/10
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