Class 8 Math Important Question

1. Out of 40 students in a class, 25% passed. How many students passed? (a) 20  (b) 10  (c) 30  (d) 40

2. A vendor bought 40 dozen of fruits for Rs2400. Out of these, 30 fruits were rotten and thrown away. At what rate per dozen should he sell the remaining fruits to make a profit of 25%? (a) Rs 84 (b) Rs 72 (c) Rs 90 (d) Rs 80
3. .If the selling price of an article is 32% more than its cost price and the discount on its marked price is 12%, then what is the ratio of its cost price to the marked price? (a)4:5 (b)3:8 (c) 2:3 (d) 1:2
4. If two plane mirrors are inclined at an angle of 40°, number of images formed will be (a) 7 (b) 8 (c) 9 (d) 5
5. Surbhi spends 75% of her income. If her income increases by 20% and savings decreases by 1%, then the percentage increase in her expenditure is :  (a) 27 (b) 2.2 (c) 22 (d) 2.7
6. A number is first increased by 20% and then reduced by 15%. If the final value is 2040, then what is the initial value of the numbers ?  (a) 2100 (b) 1800 (c) 2000 (d) 1900
7. If A is 200% more than B, then B is how much percentage less than A?  (a) 33.33% (b) 50% (c) 100% (d) 66.67%
8. Manish’s salary is half of Ravi’s salary. Ravi’s salary is how much percentage more than Manish’s Salary? (a) 100% (b) 25% (c) 50% (d) 75%
9. What is the difference between 0.9 and 0.9%? (a) 0.981 (b) 0.891 (c) 0.198 (d) 8.91
10. The population of a city increased 30% in the first year and decreased by 15% in the next year. If the present population is 11,050 then the population 2 years ago was: (a) 10,000 (b) 10,050 (c) 99,000 (d) 99,500