Question
Invest Rs. (3x + 150) at 12% per annum to earn Rs. 1080
after 3 years. Find the interest earned when Rs. (2x - 50) is invested at the same interest rate for the same duration.Solution
ATQ, Equation for the initial investment: 
Calculate the interest with new principal: 
The interest earned with the new investment is Rs. 612.
More Simple and compound interest Questions
(12 × 8 + 7 ÷ 5) × 5 = ?
{5% of (20 × 25) + 6% of (30 ×35)} ÷ 11 = ?Â
The value of (40 + 3/4 of 32) /[37 + 3/4 of (34-6)] is:
Simplify the following expressions and choose the correct option.
(63 ÷ 8) + (52 * 3) - 42
1.55 + 2.05 + 1.5 × 11 – 20% of 10.5 = ?
116 ÷ 280 of 1/2 + 3/5 × 5/3 = ?
4.5 times 5/0.9× 35% of 240 =?
5490 ÷ 15 × 18 + 450 = ?
What will come in the place of question mark (?) in the given expression?
216 ÷ 6 + √? - 126 ÷ 7 = 23 X 2Â
What will come in the place of question mark (?) in the given expression?
(18 × 8 ÷ 12) × 10 = ?
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