Q 1 Akansha bought a toy car at Rs 300 including a tax of 10%. Find the price of the car before the Tax.
Q 2: 18% of a class took part in a karate competition. If 18 students have taken part in it, then what is the total number of students in the class?
Q 3. Convert the following ratio into percentage:
a. 3:4
Q 4. 72% of 25 students are good at mathematics. How many are not good in mathematics?
Q 5: On selling a chair for Rs 736,a shopkeeper suffers a loss of 8%. At what price should he sell it so as to gain 8%
Q 6: The population of a town was decreasing every year due to migration, poverty and unemployment. The present population of the town is6,31,680. Last year the migration was 4% and the year before last, itwas 6%. What was the population two years ago?
Q 7: Lemons were bought at Rs 48 per dozen and sold at the rate of Rs 40 per 10. Find the gain or loss per cent.
Q 8. Prachi bought medicines from a medical store as prescribed by her doctor for Rs 36.40 including 4% VAT. Find the price before VAT was added.
Q 9: In the year 2001, the number of malaria patients admitted in the hospitals of a state was 4,375. Every year this number decreases by 8%. Find the number of patients in 2003.
Q 10: Increase of a number from 150 to 162 is equal to increase of _________ per cent.
Q 11: In the first year on an investment of Rs 6,00,000 the loss is 5% and in the second year the gain is 10%, the net result is _________.
Q 12 A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is :
Q 13: A, B and C can do a piece of work in 20, 30 and 60 days respectively. In how many days can A do the work if he is assisted by B and C on every third day?
Q 14: In a factory, women are 35% of all the workers, the rest of the workers being men. The number of men exceeds that of women by 252. Find the total number of workers in the factory.
Q 15: Find the difference between Compound Interest and Simple Interest on Rs 45,000 at 12% per annum for 5 years.
Q 16: A store is having a 25% discount sale. Sheela has a Rs 50 gift voucher and wants to use it to buy a board game marked for Rs 320. She is not sure how to calculate the concession she will get. The sales clerk has suggested two ways to calculate the amount payable.
– Method 1: Subtract Rs 50 from the price and take 25% off the resulting price.
– Method 2: Take 25% off the original price and then subtract Rs 50.
a. Do you think both the methods will give the same result? If not, predict which method will be beneficial for her.
b. For each method, calculate the amount Sheela would have to pay.
Show your work.
Q 17: A shirt with marked price Rs 800 was sold at Rs 680. The rate of discount allowed on the shirt is:
(a) 10% (b) 15% (c) 20% (d) 25%
Q 18: If the cost price of 10 shirts is equal to the selling price of 8 shirts, then which of the following is true for the transaction?
(a) Profit of 25% (b) Loss of 25%
(c) Profit of 20% (d) Loss of 20%
Q 19: Both u and v vary directly with each other. When u is 10, v is 15, which of the following is not a possible pair of corresponding values of u and v?
(a)2 and 3 (b) 8 and 12 (c) 15 and 20 (d) 25 and 37.5
Q 20: Ravi starts for his school at 8 : 20 am on his bicycle. If he travels at a speed of 10 km/h, then he reaches his school late by 8 minutes but on travelling at 16 km/h, he reaches the school 10 minutes early. At what time does the school start?