Percentage Level-1 Quiz-3

1. A rainy day occurs once in every 5 days, 1/4th of these days produce rainbows. What will be the percentage of all days we have no rainbow?

2. The salary of A and B is 50% and 40% of salary of C. B’s salary is what percentage of A’s salary?

3. 2 liters of water is evaporated from a 10 L solution containing 10% sugar. What is the percentage of sugar in remaining?

4. Girl to boy ratio of a school is 2:3,.If 40% of the boys and 50% of the girls are above the age of 18. Find the number of students less than 18 years old if total no. of students is 2000.

5. Out of all the phones manufactured in a company, 12% are defective. 25% of the rest didn’t qualify security test and can’t make it to the market. What is the no. of defective phones if there are 13200 phones in the market?

6. The population of a village is increasing by a certain percentage each year. It follows the following pattern. Increases by 10% in the first year then 20% in the next, 30% in the next and so on. What will be the population of the village after three years if it’s current population is 10,000?

7. There are k bacteria in a laboratory and they gets double each minute. Then, what will be the number of bacteria at the end of 5 minutes as a percentage of k?

8. What will be the answer in the above question if bacteria double till 3 minutes and then triples?

9. A sugar water solution of 10% sugar is mixed with equal volume of water, 3/4 of it is then evaporated. What will be the percentage of sugar in the resulting solution?

10. A shopkeeper has guavas and apples in the ratio 2:3. If 15% of all fruits got rotten, what is the no. of rotten apples if he has 400 fruits in total?