Pam bought 15 goats and 18 sheep for a total price of $1678. If the cost of all the 15 goats is $750, find the average cost of 1 sheep.

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Pam bought 15 goats and 18 sheep for a total price of $1678. If the cost of all the 15 goats is $750, find the average cost of 1 sheep.

a. $ 50
b. $ 51
c. $ 51.55
d. $ 55
e. None of the above

Thanks

Default Asked on December 6, 2017 in GMAT.
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1 Answer(s)

Correct answer: c (51.55)

Explanation:

According to the question,

Total cost of 15 goats and 18 sheep = $1678 …..i
Total average cost of 15 goats = $750 …..ii
∴ The cost of 1 goat = 750/15 = 50.
Hence, the cost of 1 goat = $50 …..iii
Now, the average cost of 18 sheep = 1678 – 750 = 928 …..iv
∴ The average cost of 1 sheep = 928/18 = 51.55

Hence, the average cost of each of the 18 sheep’s is $51.55.
Hence, the correct answer is option c.

Thanks.

Default Answered on February 11, 2018.
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