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Answered

three siblings share the cost of a present costing $690 for their mother. The oldest paid 7 times as much as the youngest. The middle child paid half as much as the oldest. How much must the middle and the youngest child return to the eldest child of the three siblings decide to share the cost of the present equally?

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ALBINOREX465IN

Answer and Step-by-step explanation:

7x + \frac{7x}{2}

2

7x

+ x = 690

8x + \frac{7x}{2}

2

7x

= 690

16x + 7x = 1380

23x = 1380

x = 60

Eldest:

= 7x

= 7 (60)

= $420

Middle:

= 7x ÷ 2

= 7 (60) ÷ 2

= $210

Youngest:

= x

= $60

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