Question

A jewelry maker purchased 20 inches of gold chain. She used 3/8 of the chain for a bracelet. How many inches of gold chain did she have left?

Answer 1

The answer is 12.5 inches.

Given that the jewelry maker has a 20 inch gold chain, if she used 3/8 of this amount= (3/8) x 20
            = 7.5 

This means that she has used 7.5 inches of the gold chain.

To find out how many inches she has left, the formula=  the total amount- the amount used.

=20 - 7.5
= 12.5

Therefore, the length of the gold chain left is 12.5 inches.

Answer 2

12¹/₂ or 12.5 inches

Further explanation

Given:

• A jewelry maker purchased 20 inches of gold chain.
• She used $\frac{3}{8}$ of the chain for a bracelet.

Question:

How many inches of gold chain did she have left?

The Process:

From the information above, let us create a suitable diagram as follows:

$\boxed{\frac{20}{8}}\boxed{\frac{20}{8}}\boxed{\frac{20}{8}}\boxed{\frac{20}{8}}\boxed{\frac{20}{8}}\boxed{\frac{20}{8}}\boxed{\frac{20}{8}}\boxed{\frac{20}{8}} = 20 \ inches$

$\boxed{\frac{20 \div 4}{8 \div 4} \rightarrow \frac{5}{2}}$. The diagram has rewritten as follows:

$\boxed{\frac{5}{2}}\boxed{\frac{5}{2}}\boxed{\frac{5}{2}}\boxed{\frac{5}{2}}\boxed{\frac{5}{2}}\boxed{\frac{5}{2}}\boxed{\frac{5}{2}}\boxed{\frac{5}{2}} = 20 \ inches$

$\boxed{ \ Hence, \ 1 \ unit = \frac{5}{2} \ inches \ }$

She used $\frac{3}{8}$ of the chain for a bracelet, or 3 of 8 units of 20 inches. It means she has left 5 of 8 units.

Let us calculate how many inches of the gold chain did she have left.

$\boxed{ \ = 5 \times \frac{5}{2} \ inches \ }$

$\boxed{\boxed{ \ \frac{25}{2} \ inches \ }}$

In mixed fraction:

$\boxed{\boxed{ \ \frac{25}{2} = \frac{24}{2} + \frac{1}{2} = 12\frac{1}{2} \ inches \ }}$

In decimal:

$\boxed{\boxed{ \ \frac{25}{2} \times \frac{5}{5} = \frac{125}{10} = 12.5 \ inches \ }}$

It could also be like this:

$\boxed{\boxed{ \ 12\frac{1}{2} = 12\frac{5}{10} = 12.5 \ inches \ }}$

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Quick Steps:

She has left $\frac{5}{8}$ of the chain for a bracelet.

$\boxed{ \ = \frac{5}{8} \times 20 \ inches \ }$

$\boxed{ \ = \frac{100}{8} \ inches \ }$

$\boxed{ \ = \frac{100 \div 4}{8 \div 4} \ inches \ }$

$\boxed{ \ = \frac{25}{2} = 12\frac{1}{2} \ inches \ }$

Thus she has left $\boxed{ \ 12\frac{1}{2} \ or \ 12.5 \ inches \ of \ gold \ chain  \ }$

Learn more

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Keywords: a  jewelry maker, purchased, 20 inches of gold chain, she used, 3/8, for a bracelet, how many, did, she have left