Basic Numeracy (MCQ - 5)

1. Gold is 19 times as heavy as water and copper is 9 times as heavy as water. In what ratio should these be mixed to get an alloy 15 times as heavy as water?1. 1 : 1
2. 4 : 3
3. 5 : 2
4. 3 : 2

2. The electricity bill of a certain establishment is partly fixed and partly varies as the number of units of electricity consumed. When in a certain month 540 units are consumed, the bill is Rs. 1800. In another month 620 units are consumed and the bill is Rs. 2040. In yet another month 500 units are consumed. The bill for that month would be:1. Rs. 1605
2. Rs. 1680
3. Rs. 1840
4. Rs. 2050

3. The ratio of the incomes of A and B is 5 : 4 and the ratio of their expenditures is 3 : 2. If at the end of the year, each saves Rs. 1600, then the income of A is:1. Rs. 3800
2. Rs. 4800
3. Rs. 4000
4. Rs. 4500

4. Zinc and copper are melted together in the ratio 9 : 11. What is the weight of melted mixture, if 28.8 kg of zinc has been consumed in it?1. 58 kg
2. 80 kg
3. 64 kg
4. 90 kg

5. The compounded ratio of (2 : 3), (6 : 11) and (11 : 2) is:1. 7 : 2
2. 2 : 1
3. 11 : 24
4. 58 : 121

Answers

1. (4) 2. (2) 3. (3) 4. (3) 5. (2)