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Home > Self-Study Quizzes > Quiz 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.  1.  The average age of a group of 10 students was 20. The average age increased by 2 years when two new students joined the group. What is the average age of the two new students who joined the group? A) 22 years B) 30 years C) 44 years D) 32 years E) None of these    2.  For what values of 'k' will the pair of equations 3x + 4y = 12 and kx + 12y = 30 not have a unique solution? A) 12 B) 9 C) 3 D) 7.5 E) 2.5    3.  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 8th day? A) $ 83 B) $ 92 C) $ 90 D) $ 97 E) $ 104    4.  The basic one-way air fare for a child aged between 3 and 10 years costs half the regular fare for an adult plus a reservation charge that is the same on the child's ticket as on the adult's ticket. One reserved ticket for an adult costs $216 and the cost of a reserved ticket for an adult and a child (aged between 3 and 10) costs $327. What is the basic fare for the journey for an adult? A) $ 111 B) $ 52.5 C) $ 210 D) $ 58.5 E) $ 6    5.  A lady grows cabbages in her garden that is in the shape of a square. Each cabbage takes 1 square feet of area in her garden. This year, she has increased her output by 211 cabbages as compared to last year. The shape of the area used for growing the cabbages has remained a square in both these years. How many cabbages did she produce this year? A) 11236 B) 11025 C) 14400 D) 12696 E) Cannot be determined

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