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Chapter 1: Q13. (page 21)

Use the percent proportion to find the following number.

50% of what number is 80%?

Short Answer

Expert verified

50% of 160 is 80.

Step by step solution

01

Step 1. Definition of percent:

Percent of a number is defined as the ratio of number and 100.

02

Step 2. Formula Used.

The ratio of part x of some number y is equal to the percent is written as.

xy=p100

03

Step 3. Find the percent proportion.

Percent = 50, x = 80 and y =?

xy鈥�=p100鈥�鈥�鈥�80y=50100鈥�crossmultiply80脳100=50脳y8000=50y鈥�鈥�dividebothsideby50800050=50y50160=yy=160

Hence, 50% of 160 is 80.

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