Question

the price of an item x increases by 1o and an item y decreases by 15 every year if in 2018 the price of an item x is 50 and y is 90 then which item will be costlier in the year 2020​

Answer 1

Step-by-step explanation:

price of x increases by 10 every year

so price of x in 2020 is 50+2×10=70

price of y decreases by 15 every year

so price of y in 2020 is 90-2×15=60