Question

A bikini and sunglasses cost 110 $ in total. the bikini costs 100 $ more than the glasses. how much do the sunglasses cost?

Answer 1

total cost =110
let cost of sunglass be x.
cost of bikini=x+100
therefore
x+x+100=110
or 2x=110-100=10
or x=10/2=5

Answer 2

let the cost sunglasses be y

so , given that :- total cost = 110$

cost of bikini = 100$ + y + y = 110$

2y = 10$

=> y = 5$