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an electrician earns $100 for a project installing light fixtures she must pay for the lights herself and they cost $2.50 each at the hardware store. if she wants to earn a profit of 75$ from this project, How many fixtures should she plan to install? show your work.

Respuesta :

Given data:

The amount electrician earned is C=$100.

The cost paid to each hardware is c=$2.50

The given profit is P=$75.

The expression for total profit earned after x fixtures is,

P=C-xc

Substitute the given values.

75=100-2.5x

2.5x=25

x=10

Thus, the numbers of fixtures required to get $75 profit are 10.

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