Question

26. A sum of money amounts to Rs. 4624 in 2 years and to Rs. 4913 in 3 years at compound interest.
The sum is :
(A) Rs. 4096
(B) Rs. 4260
(0) Rs.4335
(D) Rs. 4360
27. A man buys an article for Rs. 27.50 and sells it for Rs. 28.60. Find his gain percent.
(A) 2%
(B) 5%
(04%
(D) 9%
28. By selling a book for Rs. 115.20, a man loses 10%. At what price should he sell it to gain 5%?
(A) Rs. 132.40
(B) Rs. 134.40
(C) Rs. 138.40
(D) Rs. 140.50
29. A man sold two houses for Rs. 675958 each. On one he gains 16% while on the other he loses
16%. How much does he gain or lose in the whole transaction?
(A) 2.56%
(B) 3.56%
(C) 4.54%
(D) 9.68%
30. If the difference between the interest and the amount of discount, on a certain sum of money
for six months at 6% be Rs. 2.25 P. Find the sum.
(A) Rs. 2474
(B) Rs. 2575
(0) Rs2500
(D) Rs 2750​

Answer 1

26. S.I on Rs.4624 for 1 year=4913−4624=289Rs.

InterestRate=4624×1100×289=425

Let the sum=x

⇒x×(1+4×10025)2=4624

⇒x=17×174624×16×16

⇒x=4096Rs.

27. We have C.P = Rs. 27.50, S.P = Rs. 28.60

Gain = S.P. − C.P.

=28.60−27.50

= Rs. 1.10

Therefore, gain %=27.501.10×100=4%

28. Let CP be X.

X - 10% of X = 115.20

0.9X = 115.20

X = 128.

CP = 128.

SP = 128 + 5% of 128 = Rs. 134.4

29. In this case there will be always loss. The selling price is immaterial   Hence, loss % = (common loss and gain%)2 /10=(16/10)%=(64/25)%=2.56%

hope it helps you friend

I don't know 30 please manage