Question

Every year for Valentine's Day, Martin gets his

wife a dozen roses. Last year, a dozen roses
cost him $30. This year, a dozen roses cost him
$45. What is the percent change from last year
to this year (whole number)? Did it increase or
decrease?

Answer 1

It's increased by 50% bec the change is 15 ÷ 30 = 0,5 × 100 = 50%