Model Questions for SSC CHSL (SET-121) ARITHMETIC
Model Questions for SSC CHSL (SET-121) ARITHMETIC
1. A and B can do a work in 12 days, B and C can do the same work in 15 days, C and A can do the same time work in 20 days. The time taken by A, B and C to do the same work is
(a) 5 days
(b) 10 days
(c) 15 days
(d) 20 days
2. A is 50% as efficient as B. C does half of the work done by A and B together. If C alone does the work in 20 days, then A, B and C together can do the work in
(a) days
(b) days
(c) 6 days
(d) 7 days
3. The ratio of the volumes of water and glycerine in 240cc of a mixture is 1 : 3. The quantity of water (in cc) that should be added to the mixture so that the new ratio of the volume of water and glycerine becomes 2:3 is
(a) 55
(b) 60
(c) 62.5
(d) 64
4. At present, the ratio of the ages of Maya and Chhaya is 6:5 and fifteen years from now, the ratio will get changed to 9:8. Maya’s present age is
(a) 21 years
(b) 24 years
(c) 30 years
(d) 40 years
5. The ratio of the income to the expenditure of a family is 10:7. If the family’s expenses are Rs. 10,500, then savings of the family is
(a) Rs. 4,500
(b) Rs. 10,000
(c) Rs. 4,000
(d) Rs. 5,000
