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- Question
The Simple Interest & True Discount on a certain sum of money for a given time & at a given rate are Rs 85 & Rs.80.The sum is:
Options- A. Rs.1350
- B. Rs.1360
- C. Rs.1316
- D. Rs.1200
- Correct Answer
- Rs.1360
ExplanationSum = [(S.I x T.D)/(S.I-T.D)] = (85 x 80)/(85-80) = Rs.1360
- 1. The true discount on Rs.2562 due 4 months hence is Rs.122.The rate % is?
Options- A. 12%
- B. 13 (1/3)%
- C. 15%
- D. 14% Discuss
- 2. If the truediscount on a sum due 2yrs hence at 14% per annum be Rs168. The sum due is?
Options- A. 700
- B. 760
- C. 768
- D. 786 Discuss
- 3. The Present worth of Rs.2310 due 212 years hence ,the rate of interest being 15% per annum, is :
Options- A. Rs.1440
- B. Rs.1750
- C. Rs.1680
- D. Rs.1840 Discuss
- 4. The TrueDiscount on a certain sum of money due 3 years hence is Rs.250 and SimpeInterest on the same sum for same time and same rate is Rs375. Find sum and rate%?
Options- A. (16 + 4/3)%
- B. (16 +1/3)%
- C. (16 + 5/3)%
- D. (16 + 2/3)% Discuss
- 5. The true discount on a bill due 9 months hence at 12% per annum is Rs 540. Find the amount of the bill and its present worth?
Options- A. 1600
- B. 7000
- C. 6000
- D. 6500 Discuss
- 6. A trader owes a maerchant Rs10028 due 1yr hence The trader wants to settle the account after 3 months .If the rate of interest is 12%per annum How much cash should he pay?
Options- A. Rs.9000
- B. Rs.9002
- C. Rs.9200
- D. Rs.9120 Discuss
- 7. A man buys a watch for Rs1950 in cash and sells it for Rs 2200 at a credit of 1 yr. The rate of interest is 10% per annum. Then he gains or loose how much amount?
Options- A. 50
- B. 55
- C. 15
- D. 45 Discuss
- 8. Find the present worth of a bill of Rs.28000 due 2 years at 12% compound interest. Also find the true discount.
Options- A. 300
- B. 350
- C. 250
- D. 275 Discuss
- 9. The true discount on Rs.1600 due to after a certain of 5% per annum is Rs.160. The time after which it is due is
Options- A. 27months
- B. 23months
- C. 20months
- D. 12months Discuss
- 10. If each edge of a cube is increased by 50%, find the percentage increase in Its surface area
Options- A. 125%
- B. 150%
- C. 175%
- D. 110% Discuss
True Discount problems
Search Results
Correct Answer: 12%
Explanation:
P.W = Rs.( 2562 - 122) = Rs.2440
S.I on Rs.2440 for 4 months is Rs.122
Rate = (100 x 122)/(2440 x [1/3]) % = 15%
Correct Answer: 768
Explanation:
P.W = (100 x T.D)/(R x T) = (100 x 168)/(14 x 2)= 600
Sum = (P.W + T.D) = Rs. (600+ 168) = Rs.768.
Correct Answer: Rs.1680
Explanation:
= Rs.1680
Correct Answer: (16 + 2/3)%
Explanation:
sum = [(S.I x T.D)/(S.I-T.D)] = Rs. [(375 x 250)/(375-250)] = Rs.750
Rate = (100 x 375)/(750 x 3) = %
Correct Answer: 6000
Explanation:
Let amount be Rs.x then,
[X * R * T] / [100 + (R * T)] = T.D
=> [x * 12 * (3/4)] / [100+(12 * 3/4)] =540
=> x = 6540
Amount = Rs.6540
P.W = Rs.(6540 -540) = Rs.6000
Correct Answer: Rs.9200
Explanation:
Required Money = P.W of Rs. 10028 due 9 months hence
= Rs.[10028 x 100] / [100+(12 x 9/12)] =Rs.9200
Correct Answer: 50
Explanation:
S.P = P.W of Rs. 2200 due 1yr hence = Rs. [(2200 x 100)/100+(10 x 1)] = Rs.2000
Gain = Rs.(2000-1950) = Rs. 50
Correct Answer: 300
Explanation:
PW = = Rs.2500
TD = Amount - PW = 2800 - 2500 = Rs.300
Correct Answer: 27months
Explanation:
P.W. = Rs. (1600 - 160) = Rs. 1440
? S.I. on Rs.1440 at 5% is Rs. 160.
? Time = [100 * 160 / 1440 * 5] = 20/9 years = [20/9 * 12] months = 27 months.
Correct Answer: 125%
Explanation:
Let the edge = a cm
So increase by 50 % = a + a/2 = 3a/2
Total surface Area of original cube =
TSA of new cube = = =
Increase in area = =
Increase % = = 125%
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