Jonathan finds a piece of metal that is 2 1/5 inches thick. He files off 3/10 inch. He adds a protective covering to the metal t

Question

3 years ago

13

hat is 2/10 inch thick. Then, he polishes the metal and removes an additional 1/10 inch. What is the final thickness of the metal?

1 answer:

Mama L [17] · Answer 1 · 2021-11-22T22:22:11+03:00

<h2>Answer:</h2><h2>The final thickness of the metal = 2 inches.</h2>

Step-by-step explanation:

Jonathan finds a piece of metal that is 2 $\frac{1}{5}$ inches thick.

The thickness of the metal = 2 $\frac{1}{5}$ = $\frac{11}{5}$

He files off $\frac{3}{10}$ inch,

the thickness becomes = $\frac{11}{5}$ - $\frac{3}{10}$ = $\frac{19}{10}$

He adds a protective covering to the metal that is $\frac{2}{10}$ inch thick.

the thickness becomes, $\frac{19}{10}$ + $\frac{2}{10}$ = $\frac{21}{10}$

Then, he polishes the metal and removes an additional $\frac{1}{10}$ inch.

The final thickness becomes, $\frac{21}{10}$ - $\frac{1}{10}$ = 2 inches