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तमिलनाडु बोर्ड ऑफ सेकेंडरी एज्युकेशनएसएसएलसी (अंग्रेजी माध्यम) कक्षा ७

A sum of ₹ 48,000 was lent out at simple interest and at the end of 2 years and 3 months the total amount was ₹ 55,560. Find the rate of interest per year. - Mathematics

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प्रश्न

A sum of ₹ 48,000 was lent out at simple interest and at the end of 2 years and 3 months the total amount was ₹ 55,560. Find the rate of interest per year

योग
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उत्तर

Given Principal P = ₹ 48,000

Time n = 2 years 3 months

= `2 + 3/12` years

= `2 + 1/4` years

= `8/4 + 1/4` years

= `9/4` years

Amount A = ₹ 55,560

A = P + I

55560 = 48000 + I

I = 55560 – 48000 = ₹ 7560

∴ Interest for `9/4` years = ₹ 7560

Simple intrest = `"Pnr"/100`

7560 = `48000 xx 9/4 xx "r"/100`

r = `(7560 xx 4 xx 100)/(9 xx 48000)`

= 7.09%

= 7%

Rate of interest = 7% Per annum

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  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 2: Percentage and Simple Interest - Exercise 2.4 [पृष्ठ ४४]

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सामाचीर कलवी Mathematics - Term 3 [English] Class 7 TN Board
अध्याय 2 Percentage and Simple Interest
Exercise 2.4 | Q 7 | पृष्ठ ४४

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