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GMAT Math practice - (5/36 questions - random)

GMAT practice questions. Once you complete the quiz you will see your score and explanation of the correct answer.

The average wages of a worker during a fortnight comprising 15 consecutive working days was $ 90 per day. During the first 7 days, his average wages was $ 87/day and the average wages during the last 7 days was $ 92 /day. What was his wage on the 8^th day?

	A) $ 83
	B) $ 92
	C) $ 90
	D) $ 97
	E) $ 104

How many diagonals does a 63-sided convex polygon have?

	A) 3780
	B) 1890
	C) 3843
	D) 3906
	E) 1953

A poultry farm has only chickens and pigs. When the manager of the poultry counted the heads of the stock in the farm, the number totaled up to 200. However, when the number of legs was counted, the number totaled up to 540. How many chickens were there in the farm?

	A) 70
	B) 120
	C) 60
	D) 130
	E) 80

If m, s are the average and standard deviation of integers a, b, c, and d, is s > 0?

(1) m > a

(2) a + b + c + d = 0

	A) Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient to answer the question asked.
	B) Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient to answer the question asked.
	C) BOTH statements (1) and (2) TOGETHER are sufficient to answer the question asked, but NEITHER statement ALONE is sufficient to answer the question asked.
	D) EACH statement ALONE is sufficient to answer the question asked.
	E) Statements (1) and (2) TOGETHER are NOT sufficient to answer the question asked, and additional data specific to the problem are needed.

Robin earns 30% more than Erica. Charles earns 60% more than Erica. How much % is the wages earned by Charles more than that earned by Robin?

	A) 23%
	B) 18.75%
	C) 30%
	D) 50%
	E) 100%


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