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A sum of money amounts to Rs 9800 after 5 years and Rs. 12005 after 8 years at the same rate of simple interest. The rate of interest per annum is ?
A. 12%
B. 15%
C. 5%
D. 8%Arooj took a loan of Rs. 1200 with simple interest for as many years as the rate of interest. If she paid Rs. 432 as interest at the end of the loan period, what was the rate of interest?
A. 13
B. 9
C. 5
D. 6What is the present worth of Rs. 132 due in 2 years at 5% simple interest per annum?
A. Rs. 122
B. Rs. 120
C. Rs. 112
D. Rs. 118.80An amount of 5,000 is invested at a fixed rate of 8 per cent per annum. What amount will be the value of the investment in five years time, if the interest is compounded every six months ?
A. 4567
B. 7890
C. 3456
D. 7401.22Simple interest on Rs.500 at 6% per annum from May 3rd to July 15th in the same year is ?
A. Rs.6
B. Rs.9
C. Rs.8
D. Rs.4A lends Rs. 1500 to B and a certain sum to C at the same time at 8% per annum simple interest. If after 4 years, A altogether receives Rs. 1400 as interest from B and C, then the sum lent to C is ?
A. Rs.2245
B. Rs.2615
C. Rs.2875
D. Rs.1885A sum was put a simple interest at a certain rate for 2 years. Had it been put at 4% higher rate, it would have fetched Rs. 60 more. The sum is ?
A. Rs.820
B. Rs.940
C. Rs.750
D. Rs.700How much time will it take for an amount of Rs. 900 to yield Rs. 81 as interest at 4.5% per annum of simple interest ?
A. 1 year
B. 4 years
C. 2 years
D. 3 yearsIf the height of a pole is 2√3 metres and the length of its shadow is 2 metres, find the angle of elevation of the sun ?
A. 70°
B. 80°
C. 60°
D. 50°Let AB be the pole and AC be its shadow. Let angle of elevation, ∠ACB = θ. Then, AB = 2√3m, AC = 2 m. tan θ = AB/AC = 2√3/2 = √3 θ = 60°. So,the angle of elevation is 60°
Top of a 15 metre high tower makes an angle of elevation of 60° with the bottom of an electric pole and angle of elevation of 30° with the top of the pole. What is the height of the electric pole?
A. 10 metres
B. 12 metres
C. 5 metres
D. 8 metres