What will come in the place of question mark (?) in the following equation , if '÷' and 'x' are interchanged and '+' and '-' are interchanged ? 50 - 9 ÷ 1 + 63 x 7 = ?
In an examination there where 3 papers of Mathematics , two papers of english and one paper of science. All papers where of 100 marks. S got 60% in Mathematics , 70% in English and 50% in Science. What was the percentage of marks in all papers ?
A number is first decreased by 15% and then increased by 20%. The number so obtained is 78 more than the original number. The original number is :
If at same rate of interest , in 2 years the simple interest is INR 42 and compound interest is INR 51, Then what is the principal (in INR) ?
Mandar has two grandsons Ketan and Tushar. 11 years old Ketan gets some money From Mandar's wealth and 12 year old Tushar gets the rest of the money.But Ketan and Tushar will get the money only when they tunrs 22 years old. Till then the money is in a bank getting interest at rate 8% compounded annually. When both turn 22, they receive the same amount. How much had Mandar given Tushar (in INR) initially, If total money with Mandar was INR 24700?