General Mathematics

Question: A person borrowed Rs `500` at the rate of `5%` per annum S.I. What amount will he pay to clear the debt after `4` years ?
A
`Rs 200`

B
`Rs 550`

C
`Rs 600`

D
`Rs 700`

Note: Amount = Rs `(500 + (500 xx 5 xx 4)/100)` `= Rs. 600`
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Question: If A lends Rs.`3500` to B at `10%` p.a. and B lends the same sum to C at `11.5%`p.a, then the gain of B (in Rs) in a period of `3` years is :
A
`107.50`

B
`115.50`

C
`157.50`

D
`177.50`

Note: Gain = Rs. `((3500 xx 11.5 xx 3)/(100) - (3500 xx 10 xx 3)/(100))` `= Rs.(1207.5 - 1050)` `= Rs. 157.50`
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Question: In what time wil Rs. `500` give Rs. `50` as interest at the rate of `5%` p.a. S.I ?
A
`2 years`

B
`2 1/2 years`

C
`3 years`

D
`4 years`

Note: Time `= ((100 xx 50)/(500 xx 5)) years` `= 2 years`.
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Question: Avinash borrowed Rs `5000 from Sanjay at simple interest .After `3` years Sanjay got Rs .`300` more than he had given to Avinash. What was the rate of interest per annum ?
A
`2%`

B
`5%`

C
`8%`

D
`10%`

Note: Rate `= ((100 xx 300)/(5000 xx 3))%` `= 2%`
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Question: Ashok took a loan of Rs. `1500` for `3` years at simple interest. If the total interest paid is R. 2700,what is the rate of interest per annum ?
A
`5.4%`

B
`6%`

C
`9%`

D
`18%`

Note: Rate `= ((100 xx 2700)/(1500 xx 3))%` `= 6%`
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Question: Rakesh took a loan for `6` years at the rate of `5%`p.a.S.I.If the total interest paid was Rs.`1230`,the principal was :
A
`Rs. 4100`

B
`Rs. 4920`

C
`Rs. 5000`

D
`Rs.5300`

Note: Principal = Rs. `((1230 xx 100)/(6 xx 5))` `= Rs 4100`.
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Question: How much should a person lend at simple rate of interest of `15%`in order to have Rs.`784` at the end of `1 1/2` years ?
A
`Rs. 640`

B
`Rs. 620`

C
`Rs. 610`

D
`Rs. 680`

Note: Let the required money be x.Then `(x + (x xx 15)/100 xx 3/2)` `= 784 ⇔ (49x)/40` `= 784 ⇔ x` `= (784 xx 40)/49` `= 640`.
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Question: Satish took a loan at `10%`p.a. S.I. After `4` years ,he returned the principal along with the interest. If he returns in all Rs. `3500`, what is the principal amount ?
A
`Rs. 3250`

B
`Rs. 2500`

C
`Rs. 3150`

D
`Rs.2100`

Note: Let the principal be Rs.x.Then, `x + (x xx 10 xx 4)/100` `= 3500 ⇔ (140x)/100` `= 3500 ⇔ x ` `= (3500 xx 100)/140` `= 2500`
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Question: Rs. `800`amounts to Rs. `920`in `3` years at simple interest.If the interest rate is increased by `3%`,it would amount to how much ?
A
`Rs. 992`

B
`Rs. 1056`

C
`Rs. 1112`

D
`Rs. 1182`

Note: Principal = Rs. 800, S.I `= Rs. 120, Time = 3 years` `Rate = ((100 xx 120)/(800 xx 3))%` `= 5%`. New rate` = 8%`, principal `= Rs. 800, Time = 3 years`. `S.I = Rs. ((800 xx 8 xx 3)/(100))` `= Rs. 192` :. New amount `= Rs. (800 + 192)` `= Rs. 992`
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Question: The mean proportional to `0.32` and `0.02` is :
A
`0.8`

B
`0.08`

C
`0.008`

D
`0.4`

Note: Required mean proportion `= sqrt(0.32 xx 0.02)` `= sqrt(64/10000)` `= 8/100` `= .08`.
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Question: A person borrowed Rs `500` at the rate of `5%` per annum S.I. What amount will he pay to clear the debt after `4` years ?

Question: If A lends Rs.`3500` to B at `10%` p.a. and B lends the same sum to C at `11.5%`p.a, then the gain of B (in Rs) in a period of `3` years is :

Question: In what time wil Rs. `500` give Rs. `50` as interest at the rate of `5%` p.a. S.I ?

Question: Avinash borrowed Rs `5000 from Sanjay at simple interest .After `3` years Sanjay got Rs .`300` more than he had given to Avinash. What was the rate of interest per annum ?

Question: Ashok took a loan of Rs. `1500` for `3` years at simple interest. If the total interest paid is R. 2700,what is the rate of interest per annum ?

Question: Rakesh took a loan for `6` years at the rate of `5%`p.a.S.I.If the total interest paid was Rs.`1230`,the principal was :

Question: How much should a person lend at simple rate of interest of `15%`in order to have Rs.`784` at the end of `1 1/2` years ?

Question: Satish took a loan at `10%`p.a. S.I. After `4` years ,he returned the principal along with the interest. If he returns in all Rs. `3500`, what is the principal amount ?

Question: Rs. `800`amounts to Rs. `920`in `3` years at simple interest.If the interest rate is increased by `3%`,it would amount to how much ?

Question: The mean proportional to `0.32` and `0.02` is :