Question

Form the pair of linear equations for the following problems and find their solution by substitution method.
a) The difference between two numbers is 26 and one number is three times the other. Find them.
b) The larger of two supplementary angles exceeds the smaller by 18 degrees. Find them.
c) The coach of a cricket team buys 7 bats and 6 balls for RS.3800. Later, she buys 3 bats and 5 balls for RS.1750. Find the cost of each bat and each ball.

Answer 1

2x=26
x=26/2
x=13
3x=13×3=39
No2
2x-18=180
2x=18+180
2x=198
x=198/2
x=99