30136

Question

Tony is making a fruit cake.

The recipe says he needs 3 cups of sultanas for every 5 cups of flour.

If 2.5 cups of flour are used, how many cups of sultanas are needed?

Worked Solution

Strategy 1:

2.5 cups = half of 5 cups of flour.

⇒\Rightarrow Half of 3 cups of sultanas is required.

∴\therefore 1.5 cups of sultanas needed.

Strategy 2:

Let  n\ \large n = cups of sultanas needed
n2.5\dfrac{\large n}{2.5} = 35\dfrac{3}{5}
∴n\therefore \large n = 3×2.55\dfrac{3 \times 2.5}{5}
= 1.5 cups

Variant 0

DifficultyLevel

583

Question

Tony is making a fruit cake.

The recipe says he needs 3 cups of sultanas for every 5 cups of flour.

If 2.5 cups of flour are used, how many cups of sultanas are needed?

Worked Solution

Strategy 1:

2.5 cups = half of 5 cups of flour.

⇒\Rightarrow Half of 3 cups of sultanas is required.

∴\therefore 1.5 cups of sultanas needed.

Strategy 2:

Let  n\ \large n = cups of sultanas needed
n2.5\dfrac{\large n}{2.5} = 35\dfrac{3}{5}
∴n\therefore \large n = 3×2.55\dfrac{3 \times 2.5}{5}
= 1.5 cups

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
correctAnswer
1.5 cups

Answers

Is Correct?Answer
x

0.5 cups

✓

1.5 cups

x

2.5 cups

x

4.5 cups

Tags

  • ch_ratio