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I need help with this please and thank you

I need help with this please and thank you-example-1
User Tiwo
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At 140 sit-ups, both conditions are met.

We can solve this problem by treating the equations we are given as two dependent equations, meaning that now we have a system of equations. The easiest way to solve this system is to use substitution. We can do this because we already know what s is equal, expressed in p. Since s = 4p, we can substitute that in our other equation.

5p = 175

Get p by itself
5/5p = 175/5
p=35

Now we can substitute the value of p in either of the equations. Since we know that s = 4p, s = 35 * 4 = 140. That means the answer to our problem is 140 sit-ups.
User DraganHR
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