Q. 41 A box has 100 blue balls, 50 red balls and 50 black balls. 25% of blue balls and 50% of red balls are taken away. The percentage of black balls at present is

Q. 42 The population of a village is 25,000. One fifth are females and the rest are males. 5% of males and 40% of females are uneducated. What percentage of the whole are educated?

Q. 49 25% of annual salary of A is equal to eighty per cent of annual salary of B. The monthly salary of B is 40% of the monthly salary of C. The annual salary of C is Rs 6 lac. What is the monthly salary of A?

Q. 50 The monthly salaries of A and B together amount to Rs 40,000. A spends 85% of his salary and B spends 95% of his salary. If now their savings are the same, then the salary (in Rs) of A is

Q. 51 A man spends 40% of his monthly salary on food and one-third of the remaining on transport. If he saves Rs 4500 per month, which is equal to half the balance after spending on food and transport, his monthly salary is

Q. 52 The salary of a person was reduced by 10%. By what per cent should his reduced salary be raised so as to bring it at par with his original salary

Q. 53 A person gave 20% of his income to his elder son, 30% of the remaining to the younger son and he donated 10% of the balance to a trust. He is left with Rs 10,080. His income was

Q. 55 Rama’s expenditures and savings are in the ratio 5: 3. If her income increases by 12% and expenditure by 15%, then by how much per cent do her savings increase?

Q. 56 The expenses on rice, fish and oil of a family are in the ratio of 12: 17: 3. The prices of these articles are increased by 20%, 30% and 50% respectively. The total expenses of family on these articles are increased by

Q. 57 The ratio of the number of boys to that of girls in a school is 4 : 1. If 75% of boys and 70% of the girls are scholarship- holders, then the percentage of students who do not get scholarship is

Q. 60 The price of a commodity rises from Rs 6 per kg to Rs 7.50 per kg. If the expenditure cannot increase, the percentage of reduction in consumption is