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Let the height of the building be h. The height from the eye level to the top is given by: tan 60 degrees = (h - 1.5)/30, where tan 60 degrees = √3 ≈ 1.732. Thus, h - 1.5 = 30 * 1.732 h - 1.5 = 51.96 h = 51.96 + 1.5 = 53.46 m. Correct Answer: c) 53.46 m
If a certain sum becomes 5 times of itself in 2 years when invested at certain rate (per annum) of simple interest, then find the rate of interest.
If the ratio of the sum invested and simple interest received after 1 year is 20:13 respectively, then find the rate of interest.
In what time will Rs. 45000, at 4% per annum, produce the same interest at Rs.18000 does in 5 years at 8% simple interest?
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Asmita invested Rs. 3200 for 2 years at an annual simple interest rate of r%, while Shreya invested the same sum as Asmita for 2 years at an annual comp...
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Simple interest on a sum of money for 2 years is 1/5th of the sum, then the interest received in 5 years on same principal will be what time of the prin...
Rs. 5000 when invested at simple interest of r% p.a. amounts to Rs. 6000 in 24 months. If the same sum had been invested for 1 year at compound interest...
What sum of money must be given at simple interest for 3 months at 4% per annum in order to earn Rs. 240 interest?
Ashakti invested the same amount of money in two distinct Systematic Investment Plans (SIPs), SIP 'X' and SIP 'Y,' both for a duration of 2 years. SIP '...
