Freddy Friedman
2022-07-24
Answered

Automobile Maintenance Mandy purchased two new steel-belted all-weather radial tires for her car. The tread depth on the new tires measures 11/32 of an inch. The dealer told her that when the tires have worn down and their tread depth measures 1/8 of an inch, she should replace the worn tires with new ones. How much will the tread depth decrease over the useful life of the tire?

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Reinfarktq6

Answered 2022-07-25
Author has **18** answers

We just gotta subtract them

$\frac{11}{32}-\frac{1}{8}$

LCD of 32 and 8 is :32

So, get the denominator to be 32

$\frac{11}{32}-\frac{1}{8}\phantom{\rule{0ex}{0ex}}\to \frac{11}{32}-\frac{4}{32}\phantom{\rule{0ex}{0ex}}\to \frac{11-4}{32}\phantom{\rule{0ex}{0ex}}\to \frac{7}{32}$

So tread depth decreases by 7/32 inches during the useful life of the tires

$\frac{11}{32}-\frac{1}{8}$

LCD of 32 and 8 is :32

So, get the denominator to be 32

$\frac{11}{32}-\frac{1}{8}\phantom{\rule{0ex}{0ex}}\to \frac{11}{32}-\frac{4}{32}\phantom{\rule{0ex}{0ex}}\to \frac{11-4}{32}\phantom{\rule{0ex}{0ex}}\to \frac{7}{32}$

So tread depth decreases by 7/32 inches during the useful life of the tires

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