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grade 7 · RATIO-013

Solve a percent-change problem

Use the original quantity as the percent-change reference.

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Show what I knowFresh problem · seed 81590857

A value changes from 40 to 20. What is the percent decrease?

original40

↘

new20

Your answer

It is always okay to go back to more help.

Math Lab is a working name for Ready Rung's separate math-learning product. Guided success and independent evidence are reported separately.