1. Monthly incomes of A and B are in the ratio of 4 : 3 and their expenses bear the ratio 3 : 2. Each of them saves Rs. 6,000 at the end of the month, then the monthly income of A is

(a) Rs. 12,000
(b) Rs. 24,000
(c) Rs. 30,000
(d) Rs. 60,000

2. The average of three consecutive odd numbers is 12 more than one third of the first of these numbers. What is the last of the three numbers?

(a) 15
(b) 17
(c) 19
(d) Data inadequate

3. The average of 18 observations is recorded as 124. Later it was found that two observations with values 64 and 28 were entered wrongly as 46 and 82. Find the correct average of the 18 observations.

(a) 895/8
(b) 122
(c) 123
(d) 1236/9

4. If the cost price of 15 articles is equal to the selling price of 12 articles, find gain%

(a) 20
(b) 25
(c) 18
(d) 21

5. The cost price of an article is 64% of the marked price. The gain percentage after allowing a discount of 12% on the market price is

(a) 37.5%
(b) 48%
(c) 50.5%
(d) 52%

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