Exercise 3.4

A lending library has a fixed charge for the first three days and additional charge for each day thereafter. Saritha paid Rs. 27 for a book kept for seven days, while Susy paid Rs. 21 for the book she kept for five days. Find the fixed charge and the charge for each extra day. A [...]

Meena went to a bank to withdraw Rs 2000. She asked the cashier to give her Rs 50 and Rs 100 notes only. Meena got 25 notes in all. Find how many notes Rs 50 and Rs 100 she received. Meena went to a bank to withdraw Rs 2000. She asked the cashier to give [...]

Meena went to a bank to withdraw Rs 2000. She asked the cashier to give her Rs 50 and Rs 100 notes only. Meena got 25 notes in all. Find how many notes Rs 50 and Rs 100 she received. Meena went to a bank to withdraw Rs 2000. She asked the cashier to give [...]

The sum of digits of a two-digit number is 9. Also,nine times this number is twice the number obtained by reversing the order of the digits.Find the number. nine times this number is twice the number obtained by reversing the order of the digits.Find the number. The sum of digits of a two-digit number is [...]

The sum of digits of a two-digit number is 9. Also,nine times this number is twice the number obtained by reversing the order of the digits.Find the number. nine times this number is twice the number obtained by reversing the order of the digits.Find the number. The sum of digits of a two-digit number is [...]

Five years ago, Nuri was thrice as old as Sonu. Ten years later, Nuri will be twice as old as Sonu. How old are Nuri and Sonu? Five years ago Nuri was thrice as old as Sonu. Ten years later Nuri will be twice as old as Sonu. How old are Nuri and Sonu? October [...]

If we add 1 to the numerator and subtract 1 from the denominator, a fraction becomes 1. It also becomes 1/2 if we only add 1 to the denominator. What is the fraction? a fraction becomes 1. It also becomes 1/2 if we only add 1 to the denominator. What is the fraction? If we [...]

Solve the following pair of linear equations by the elimination method and the substitution method: x/2 + 2y/3 = -1, x- y/3 =3 Solve the following pair of linear equations by the elimination method and the substitution method: x/2 + 2y/3 = -1 x- y/3 =3 October 3, 2020 Category: Chapter 3 - Pair of [...]

Solve the following pair of linear equations by the elimination method and the substitution method: 3x – 5y – 4 = 0 , 9x = 2y + 7 9x = 2y + 7 Solve the following pair of linear equations by the elimination method and the substitution method: 3x - 5y - 4 = 0 [...]

Solve the following pair of linear equations by the elimination method and the substitution method: 3x + 4y = 10, 2x – 2y = 2 2x - 2y = 2 Solve the following pair of linear equations by the elimination method and the substitution method: 3x + 4y = 10 October 3, 2020 Category: Chapter [...]