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

Printed Study Kit for SSC CHSL (10+2) Exam

एसएससी CHSL(10+2) परीक्षा ​​अध्ययन सामग्री

ANSWER:
1. (b) 2. (b) 3. (b) 4. (c) 5. (a)