Question
The certain sum amounts to Rs 9,982.50 in 2(1/2) years
at 12% p.a., interest compounded 10-monthly. The sum (in Rs) is:Solution
2 (1/2) years = 30 months  [As 1 year = 12 months] So, t = 30/10 = 3 r = (12/12) × 10 = 10% Let the sum be Rs. P Now, 9982.5 = P(1 + 10/100)3 ⇒ 9982.5 = P(1 + 1/10)3 ⇒ 9982.5 = P(11/10)3 ⇒ 9982.5 = 1331P/1000 ⇒ P = 9982.5 × (1000/1331) ⇒ P = 7500 So, sum = Rs. 7500 ∴ The sum (in Rs.) is Rs 7500.
- What will come in place of (?) in the given expression.
(25% of 320) + (15% of 240) = ? The speed of the stream is 10 km/h. Boat ‘A’ covers 110 km distance against the stream in 11 hours and boat ‘B’ covers 65 km distance against th...
[(1245 ÷ 9) ÷ 12] × 540 = ?2 – 175
25639 – 5252 – 3232 = ?
Find the value of ‘a’ in the following expression:
12 × a × 24 ÷ 8 + 72 – 46 = 170
- What will come in the place of question mark (?) in the given expression?
(198/13) X (52/11) - ? ÷ 5 = 13 + 68 ÷ 4 What will come in the place of question mark (?) in the given expression?
? = (40% of 80% of 6400) ÷ 64
√361 ÷ (21/23) × 84 = ?
96% of 4500 – 34% of 650 = ?
25% of 60 × 15% of 120 = 30% of (?)
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