Problema Solution
Sales at a coffee shop went up 40% in 5 years. If 22,000 coffees were sold in the current year, find the number of coffees sold 5 years ago. Round to the nearest come when necessary
Answer provided by our tutors
let x = the number of coffees sold 5 years ago
x increased by 40% gives 22,000:
x + 0.40x = 22,000
by solving we find:
x = 15,714 coffees
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the number of coffees sold 5 years ago was 15,714 coffees.