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Internal Angle of a Polygon = ((n-2)×180°)/n External Angle of a Polygon = (360°)/n ((n-2)×180°)/n - (360°)/n = 60° ((n-2)×3)/n - 6/n = 1 (3n-6-6)/n = 1 3n – 12 = n n = 6
A invested Rs.600 at r% rate of simple interest for 20 months while B invested Rs.900 at 16% rate of simple interest for r months. If they together rece...
The difference between the simple and compound interest compounded annually of a sum at 12% p.a. for 2 years is Rs. 180. Find the sum.
Find the period when simple interest on Rs.4000 at 6% per annum will be Rs.400.
Rs. 4500 is invested in scheme ‘A’ for a year at simple interest of 40% p.a. The interest received from scheme ‘A’ is reinvested for 2 years in ...
The interest earned when a sum is invested at simple interest of 16% p.a., for 3 years, is Rs. 2400. What will be the total amount received after 2 year...
If a sum when placed at compound interest grows to Rs.6,400 in 2 yrs and to Rs. 8,000 in 3 yrs, find the rate percent p.a.
If an investment of Rs. 5,120 grows to Rs. 6,480 in two years when compounded annually at an interest rate of 'R%' per annum, calculate the value of 'R'.
The difference between compound interest and simple interest at the same rate for Rs. 1800 for 2 years is Rs. 18. The rate of interest per annum is:
Atul has Rs.550 with him. He invested 40% of the amount at 5% p.a. for 6 years and rest at 20% p.a. for 5 years. Find the sum of simple interests receiv...
A certain sum of money invested at R% p.a. fetches a compound interest (compounded annually) of 1630.5 and simple interest of Rs.1500 at the end of 2 ye...
