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प्रश्न
If ₹80 amounts to ₹140 in 4 years, what will ₹96 amount to in 10 years at the same rate of interest per annum?
विकल्प
₹ 276
₹ 306
₹ 386
₹ 300
MCQ
उत्तर
₹ 276
Explanation:
case I
When P = 80, A = 140, SI = 140 − 80 = 60, R = ?, T = 4
`"R"=(60xx100)/(80xx4)=75/4%`........`("R"=("SI"xx100)/("P"xx"T"))`
Case II
P = 96, R =`75/45%`, T = 10, SI = ?, A = ?
`"SI"=96/100xx(75xx10)/4=180`
A = 180 + 96 = 276
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Simple and Compound Interest (Entrance Exam)
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