Proportion Practice Quiz

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Test proportional reasoning

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Essam Farrag

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Proportion Practice Quiz


Proportion Practice QuizVersión en línea Test proportional reasoning por Essam Farrag 1 If 3 apples cost $6, at the same rate, how much do 7 apples cost? a $12 b $15 c $18 d $14 2 A map scale is 1 cm represents 5 km. If the distance on the map is 7.5 cm, what is the real distance? a 35 km b 40 km c 33 km d 37.5 km 3 If x/12 = 3/4, what is x? a 12 b 9 c 6 d 15 4 If a:b = 4:9 and a = 8, what is b? a 32 b 9 c 12 d 18 5 A recipe uses flour:sugar in 2:3. If flour is 10 cups, how many cups of sugar are needed? a 15 b 12 c 14 d 18 6 If 5 is to 20 as x is to 80, what is x? a 40 b 16 c 25 d 20 7 A recipe uses 3 cups of flour for 12 cupcakes. How many cups for 36 cupcakes? a 9 b 6 c 12 d 3.5 8 If a map scale 1 cm represents 5 km, how many kilometers does 7 cm represent? a 70 b 35 c 45 d 12 9 A car travels 150 miles in 3 hours. At the same rate, how far in 5 hours? a 300 b 350 c 200 d 250 10 A class has 24 students with 6 boys. What is the expected number of boys in a class of 40 students with the same ratio? a 12 b 10 c 6 d 16 11 If 9 is to 27 as x is to 81, what is x? a 36 b 27 c 9 d 81 12 A map shows 2 cm representing 25 km. How many kilometers does 7 cm represent? a 100 b 55 c 87.5 d 70 13 A salary increases from $2,000 to $2,500. By what factor did it increase? a 1.25 b 1.5 c 2.0 d 0.8 14 If 40% of a number is 20, what is the number? a 40 b 25 c 50 d 80 15 A recipe calls for 2 cups of sugar for 8 servings. How many cups for 20 servings? a 4 b 5 c 6.5 d 8 Feedback 1 Unit price is $2 per apple; 7 × 2 = $14. 2 Real distance = 7.5 × 5 = 37.5 km. 3 Cross-multiply: 4x = 36 → x = 9. 4 Same ratio: b = (9/4)×8 = 18. 5 Sugar = (3/2)×10 = 15 cups. 6 Set up 5/20 = x/80. Solve x = 80(5/20) = 20. 7 Proportion: 3/12 = x/36 → x = 36(3/12) = 9 cups. 8 7 cm × 5 km/cm = 35 km. 9 Rate = 150/3 = 50 mph. 50×5 = 250 miles. 10 Ratio boys:total = 6:24 = 1:4. In 40 students, boys = 40×1/4 = 10. 11 9/27 = x/81 → x = 81/3 = 27. 12 Proportion: 2/25 = 7/x → x = 7×25/2 = 87.5 km. 13 Increase factor = 2500/2000 = 1.25. 14 0.40 × N = 20 → N = 20/0.4 = 50. 15 Proportion: 2/8 = x/20 → x = 20×(2/8) = 5.

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Proportion Practice Quiz

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Proportion Practice QuizVersión en línea

por Essam Farrag

If 3 apples cost $6, at the same rate, how much do 7 apples cost?

A map scale is 1 cm represents 5 km. If the distance on the map is 7.5 cm, what is the real distance?

If x/12 = 3/4, what is x?

If a:b = 4:9 and a = 8, what is b?

A recipe uses flour:sugar in 2:3. If flour is 10 cups, how many cups of sugar are needed?

If 5 is to 20 as x is to 80, what is x?

A recipe uses 3 cups of flour for 12 cupcakes. How many cups for 36 cupcakes?

If a map scale 1 cm represents 5 km, how many kilometers does 7 cm represent?

A car travels 150 miles in 3 hours. At the same rate, how far in 5 hours?

A class has 24 students with 6 boys. What is the expected number of boys in a class of 40 students with the same ratio?

If 9 is to 27 as x is to 81, what is x?

A map shows 2 cm representing 25 km. How many kilometers does 7 cm represent?

A salary increases from $2,000 to $2,500. By what factor did it increase?

If 40% of a number is 20, what is the number?

A recipe calls for 2 cups of sugar for 8 servings. How many cups for 20 servings?

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