Question
On simple interest, a certain sum becomes ₹59,200 in 6
years and ₹72,000 in 10 years. If the rate of interest had been 2% more, then in how many years would the sum have become ₹76,000?Solution
On simple interest, a certain sum becomes Rs. 59,200 in 6 years and Rs. 72,000 in 10 years. The total interest in 4 years = 72000 - 59200 = Rs. 12800 The total interest in 6 years = (12800/4) × 6 = Rs. 19200 So, the total amount = 59200 - 19200 = Rs. 40000 The rate of interest had been 2% more 40000 × (2/100) = Rs. 800 The new total interest in 1 year = (12800/4) + 800 = Rs. 4000 The required interest = 76000 - 40000 = Rs. 36000 So, the time required = 36000/4000 = 9 years ∴ The sum have become RS. 76,000 in 9 years
24, 42, 60, ?, 96, 114
What will come in place of (?) question mark in the given number series.
10, 17, 26, 37, 50, ?
660, 653, 639, 618, 590, ?
What will come in place of the question mark (?) in the following series?
75, 219, 388, ?, 809, 1065168, 178, ?, 273, 400, 618, 963
60 61 57 66 ? 75 39
...What will come in place of the question mark (?) in the following series?
2, 5, 14, 41, 122, 365, ?
81, 83, 87, 95, 111, ?
What will come in place of the question mark (?) in the following series?
400, 841, 1202, ?, 1716, 1885
64, 66, 69, 74, 81, ?
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