Multiple choice

A customer purchased an article for Rs. 140 and paid for it in only one-rupee coins, five-rupee coins and two-rupee coins. The numbers of coins are in the ratio of 5 : 3 : 4. Find the number of one-rupee coins he gave.

  1. 90

  2. 25

  3. 10

  4. 15

  5. 26
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let coins be 5x, 3x, 4x. Value = 1(5x) + 5(3x) + 2(4x) = 5x + 15x + 8x = 28x. 28x = 140, x = 5. Number of one-rupee coins = 5x = 25.

AI explanation

Let the number of one-rupee, five-rupee, and two-rupee coins be 5x, 3x, and 4x respectively; their total value in rupees is 1 multiplied by 5x, plus 5 multiplied by 3x, plus 2 multiplied by 4x. This gives the equation 5x plus 15x plus 8x equals 140, simplifying to 28x equals 140. Solving for x yields x equals 5; the number of one-rupee coins is represented by 5x, so he gave 5 multiplied by 5, which is 25 coins.

Keep practicing — related questions