1) If a:b = 3:4 and b:c = 5:6, what is a:c? a) 15:24 b) 24:15 2) The ratio of boys to girls in a class is 3:2. If there are 25 girls, how many boys are there? a) 40 b) 30 3) If 5 pencils cost $15, what is the cost of 8 pencils? a) $34 b) $33 4) If 4 mangoes and 6 apples cost $30, and 2 mangoes and 3 apples cost $15, what is the cost of 3 mangoes and 5 apples? a) $34 b) $21 5) If 2x:y = 5:6 and 3y:4z = 7:9, what is x:z? a) 14:15 b) 15:14 6) A recipe requires 2 cups of sugar for 5 cups of flour. If you have 20 cups of flour, how much sugar is needed? a) 1 cups b) 8 cups 7) If 3x + 7y = 35 and x:y = 3:2, what is the value of y? a) 4 b) 5 8) The ratio of the ages of A and B is 4:5. If the age of B is 25, what is the age of A? a) 20 b) 10 9) If a:b = 7:3 and b:c = 4:9, what is the value of a:c? a) 28:27 b) 27:28 10) If x:y = 3:4 and y:z = 2:5, what is x:z? a) 3:5 b) 5:3 11) If 2x + 3y = 15 and x:y = 2:3, what is the value of x? a) 5 b) 4 12) The length, width, and height of a box are in the ratio 3:2:1. If the volume is 54 cubic units, what is the height? a) 3 units b) 4 units 13) If a:b = 2:5 and b:c = 3:7, what is the value of a:b:c? a) 6:15:35 b) 7:13:33 14) The ratio of income to expenditure is 5:3. If the expenditure is $600, what is the income? a) $3000 b) $1000 15) If 5 men can build a wall in 20 days, how many days will it take 8 men to build the same wall? a) 12.5 days b) 11 days

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