Question

a short cost rupees 12 more than the belt the total cost of 2 shirts and 5 such belts is rupees 164 what is the cost of one belt

Answer 1

short cost(x)=12+belt cost(y)
x-y=12 ----1
2x+5y=164 ----2
multiply 1 into two times and subtract both
2x-2y=24
-(2x+5x=164)
=-7y=-140
7y=140
y=20
substitute y=20 in 1
x-20=12
x=32