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प्रश्न
Ankit invests some money at 9% simple interest for 2 years, and the same sum for 4 years at 10% per annum. He earns ₹1,740 in all. The sum invested in each case is:
विकल्प
₹4,350
₹6,000
₹4,500
₹3,000
MCQ
उत्तर
₹3,000
Explanation:
Let the sum invested by Ankit = ₹x
A.T.Q
`("x" xx 9 xx 2)/100 + ("x" xx 10 xx 4)/100 = 1740`
⇒ `(18"x" + 40"x")/100`
= 1740
⇒ 58x = 1740 × 100
⇒ x = `(1740 xx 100)/58`
= 30 × 100
= 3000
∴ The sum invested = ₹3000
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Simple and Compound Interest (Entrance Exam)
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