**Directions(1-5):** What will be the value of question mark ‘?’ in the following questions.

- (13)^54 * (13)^(-51) = (169)^2 * ?
14^-113^113^213^-110^-1Option D

(13)^54 * (13)^(-51) = (169)^2 * ?

? = 13^(54-51)/13^4 = 13^-1 - 74156 – ? – 321 – 20 + 520 = 69894
54604000453044414550Option D

74156 – ? – 321 – 20 + 520 = 69894

? = 74676 – 69894 – 341

= 4441 - 6573 ÷ 21 × (0.2)^2 =?
12.5213.3115.5011.2210.05Option A

6573 ÷ 21 × (0.2)^2 =?

? = 6573 * 0.04/21

= 12.52 - 748 × ? × 9 = 861696
100128145120133Option B

748 × ? × 9 = 861696

=> ? =861696/748 * 9

=> ? = 128 - 2115 ÷ ? = 94 × 15
1.21.41.31.51.6Option D

2115 ÷ ? = 94 × 15

? = 2115/(94 * 15)

=>? = 1.5 - Ramesh has 20% savings with him from his monthly salary. If expenditure on clothing is 25% of overall expenditure and his total expenditure except clothing is 3600 then find his saving.
13001600140012001500Option D

Total expenditure = 80% of salary

Expenditure excluding clothing

= 80% – 25/100*80%

= 60% savings

Savings = 3600/60*20 = Rs.1200 - A grocer purchased 2 kg. of rice at the rate of Rs 15 per kg. and 3 kg. of rice at the rate of Rs 13 per kg. At what price per kg. Should he sell the mixture to earn 33(1/3)% profit on the cost price.
Rs.16.25Rs.14.40Rs.13.35Rs.12.12Rs.18.40Option E

CP of mixture = 15*2+13*3/5 = 69/5 Rs. per kg

SP = [69/5*400/3]/100 = Rs.18.40 - An article is sold at a loss of 10%. Had it been sold for 9 more,there would have been a gain of 12.5% on it, then what is the cost price of the article?
4533404248Option C

(12.5 + 10) → 9

Acc. To question.

(12.5 + 10) → 9

=> 1 -> 9/22.5

=>100 -> 9000/225

Rs. 40 - The income of A is 150% of the income of B and the income of C is 120% of the income of A. If the total income of A, B and C together is Rs 86,000, what is C’s income?
3000043500456603600035670Option D

Ratio of income of

A:B:C= 15:10:18

so, 15x+ 10x+ 18x = 86000

x =2000

C’s income= 18 * 2000 = 36000 - An orange vendor makes a profit of 20% by selling oranges at a certain price. If he charges Rs 1.2 higher per orange he would gain 40%. Find the original price at which he sold an orange.
6.68.17.28.97.7Option C

Increment in Profit is due to extra charges on Orange

i.e.

20% —– 1.2

100% —– 1.2 * 5

C.P. = Rs 6

S.P. = 6 * 1.2 = Rs 7.2