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Kiran buys supplies for the school's greenhouse. He buys f bags of fertilizer and p packages of soil. He pays $5 for each bag of fertilizer and $2 for each package of soil, and spends a total of $90. The equation 5f+2p=90 describes this relationship.

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Complete Question

Kiran buys supplies for the school’s greenhouse. He buys bags of fertilizer and packages of soil. He pays $5 for each bag of fertilizer and $2 for each package of soil, and spends a total of $90. The equation 5f + 2p = 90 describes this relationship.

If Kiran solves the equation for p, which equation would result?

A. 2p = 90 − 5f

B. p = 5f − 90 /2

C. p = 45 − 2.5f

D. p = 85 f /2

Answer:

A. 2p = 90 − 5f

Step-by-step explanation:

The equation 5f + 2p = 90 describes this relationship.

We are to solve for p, this means to make p the subject of the formula , hence:

5f + 2p = 90

Subtract 5f from both sides.

5f - 5f + 2p = 90 - 5f

2p = 90 - 5f

Divide both side by 2

2p/2 = 90 - 5f/2

p = 90 - 5f/ 2

If Kiran solves the equation for p, the equation that would result is

2p = 90 − 5f .

Further simplified to :

p = 90 - 5f/ 2

Option A is correct.

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