Advertisements
Advertisements
प्रश्न
If ₹ 3,750 amount to ₹ 4,620 in 3 years at simple interest. Find:
(i) the rate of interest
(ii) the amount of Rs. 7,500 in `5 1/2` years at the same rate of interest
Advertisements
उत्तर
(i) A = Rs.4620
P = Rs.3750
I = A − P = Rs.4620 − Rs.3750 = Rs.870
T = 3 years
`"R"=(100xx"I")/("P"xx"T")=(100xx870)/(3750xx3)=(100xx290)/3750=(4xx29)/15`
`=116/15=7 11/15%`
(ii) P = Rs.7500
R = `116/15%`
T =`5 1/2` years = `11/2` years
Interest =`("P"xx"T"xx"R")/100`
= Rs.`(7500xx11xx116)/(2xx15xx100)=(250xx116xx11)/ 100`
= 10 × 29 × 11 = 290 × 11 = Rs.3190
Amount = Rs.7500 + 3190 = Rs.10,690
APPEARS IN
संबंधित प्रश्न
What sum of money borrowed on 24th May will amount to Rs.10210.20 on 17th October of the same year at 5 percent per annum simple interest.
John lent Rs. 2550 to Mohan at 7.5 percent per annum. If Mohan discharges the debt after 8 months by giving an old black and white television and Rs. 1422.50; find the price of the television.
Vilasrao borrowed Rs. 20000 from a bank at a rate of 8 p.c.p.a. What is the amount he will return to the bank at the end of the year?
The interest on ₹ 30000 for 3 years at the rate of 15% per annum is ______.
Interest = `(P xx R xx T)/100`, where T is ______ R% is ______ and P is ______.
The interest on ₹ 350 at 5% per annum for 73 days is ₹ 35.
The simple interest on a sum of ₹ P for T years at R% per annum is given by the formula: Simple Interest = `(T xx P xx R)/100`.
Amount received after depositing ₹ 800 for a period of 3 years at the rate of 12% per annum is ₹ 896.
Chalk contains 10% calcium, 3% carbon and 12% oxygen. Find the amount of carbon and calcium (in grams) in `2 1/2` kg of chalk.
The simple interest on a certain sum for 8 years at 12 per cent per annum is ₹ 3120 more than the simple interest on the same sum for 5 years at 14 per cent per annum. Find the sum.
