The average marks of 50 students in an examination was 65. It was later found that the marks of one student had been wrongly entered as 83 instead of 38. The correct average is?
Sum of scores of all students=50*65 =3250 Adding and removing correct value and wrong value respectively i.e 3250-83+38=3205 Correct average=3205/50 =64.1
The time required for a sum of money to amount to five times itself at 16% simple interest p.a. will be
Rahul placed Rs. 40,000 between two investment options, ‘E’ and ‘F’, for 6 years and 3 years, respectively. Option ‘E’ accrues simple intere...
Kajal invested Rs. (y+2000) on compound interest at the rate of 18% per annum compounded annually in scheme P. She invested Rs. ‘y’ on 20% per annum...
'R' invested Rs. 24,000 in SIP 'A' with a compound interest rate of 20% per annum compounded annually, and Rs. 18,600 in SIP 'B' with a simple interest ...
The simple interest earned on 2,400 at a rate of 5% per annum for 3 years is RS x and RS 1,736 is the simple interest earned on RS 6,200 at a rate of 14...
A took a loan of Rs.4450 at simple interest of 10% p.a. and invested the same money in a scheme at simple interest of 20% p.a. Find the profit earned by...
A sum of money, invested for 8 years on 5% per annum simple interest, amounted to ₹287 on maturity.
What was the sun invested in?
Simple interest and compound interest (compounded annually) earned on a sum at the end of 2 years at a certain rate of interest p.a. are Rs. 1500 and Rs...
Mark invested Rs 15,000 in a scheme at simple interest 20% per annum. After three years he withdrew the principal amount plus invested the entire amount...
If a sum of Rs. 6,500 is to be borrowed for 2 years at 10% per annum compounded half-yearly, find the compound amount (integer values only).