In a bag, the number of one rupee coins is three times the number of two rupees coins. If the worth of the coins is ₹ 120, find the number of 1 rupee coins
Solution:
Let the number of two rupees coins be x
Then the number of one rupee coins be 3x
The required linear equation is:
2x + 3x = 120
5x = 120
x = 120/5
x = 24
Hence, 3x = 72
Thus, the number of 1 rupee coins is 72.
✦ Try This: In a bag, the number of five rupee coins is four times the number of two rupees coins. If the worth of the coins is ₹ 110, find the number of five rupee coins.
Let the number of two rupees coins be x
Then the number of five rupee coins be 4x
A/Q
2x + 5(4x) = 110
2x + 20x = 110
22x = 110
x = 110/22
x = 5
Hence, 4x = 20
Thus, the number of five rupee coins is 20.
☛ Also Check: NCERT Solutions for Class 7 Maths Chapter 4
NCERT Exemplar Class 7 Maths Chapter 4 Problem 82
In a bag, the number of one rupee coins is three times the number of two rupees coins. If the worth of the coins is ₹ 120, find the number of 1 rupee coins
Summary:
In a bag, the number of one rupee coins is three times the number of two rupees coins. If the worth of the coins is ₹ 120, the number of 1 rupee coins is 72
☛ Related Questions:
visual curriculum