Question

At a market 5 light bulbs cost nine dollars how much does 7 light bulbs cost I need help now

Answer 1

It’s 12.6

$9/5=$1.80
$1.80 x 7=$12.6

It’s 12.6

Answer 2

`\huge\boxed{\sf \$ \ 12.6}`

Explanation:

Given that,

5 light bulbs = $9

Using unitary method.

• Divide both sides by 5

5/5 light bulb = $9/5

1 light bulb = $ 1.8

• Multiply both sides by 7

1 × 7 light bulbs = $1.8 × 7

7 light bulbs = $ 12.6

`\rule[225]{225}{2}`