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BaLLatris [955]
2 years ago
6

A smart phone manufacturer uses 10 ounces of gold circuitry to make 5,200 smart phones. If they made 7,800 smart phones last mon

th and gold is valued at $1,300 per ounce, what is the value of gold used last month? A) $19,500 B) $20,500 C) $21,500 D) $22,500
Mathematics
2 answers:
olasank [31]2 years ago
8 0

Answer:

Option A. $19,500

Step-by-step explanation:

A smart phone manufacturer uses 10 ounces of gold circuitry to make 5,200 smartphones.

We will solve this problem by unitary method.

In 5200 smartphones use of gold = 10 ounces

in 1 smartphone use of gold = \frac{10}{5200} = 0.001923 ounces

In 7,800 smartphones, use of gold = 0.001923 × 7800 = 14.999 ounces rounded to 15 ounces of gold

Last month the value of 1 ounce gold is $1,300

The value of 15 ounces = 1,300 × 15 =  $19,500

The value of gold used last month is $19,500.

agasfer [191]2 years ago
6 0

Answer:

Its 19,500

Step-by-step explanation:

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