Answers:
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Explanation:
x = amount of money Sarah has
x+15 = amount of money Sam has, since he has $15 more than her
2(x+15) = amount of money Casey has, since he has twice as much as Sam.
Let's add up those three expressions and set that sum equal to 95
Solve for x.
Sarah + Sam + Casey = 95
x+(x+15) + 2(x+15) = 95
x + x + 15 + 2x + 30 = 95
4x+45 = 95
4x = 95-45
4x = 50
x = 50/4
x = 12.50
This says that Sarah has $12.50
That must mean Sam has x+15 = 12.50+15 = 27.50 dollars
And Casey must have 2*27.50 = 55 dollars.
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As a check,
Sarah+Sam+Casey = 12.50+27.50+55 = 95
So the answer is confirmed.
Answer:
Step-by-step explanation:
Let Sarah have x dollars.
Then Sam has x + 15
Casey had 2(x + 15)
x + x + 15 + 2(x + 15) = 95 Remove the brackets.
2x + 15 + 2x + 30 = 95 Collect like terms
4x + 45 = 95 Subtract 45 from both sides.
4x = 95 - 45
4x = 50 Divide by 4
x = 50/4
x = 12.5
Sarah has 12.50
Sam has 16.67 + 16 = 27.50
Casey has 55.00
Total 95
