Question

Matthew makes a drink using lemonade and orange juice.

210ml of his drink was lemonade
140ml of his drink was orange juice
Rosie makes more of the drink for a party using the same ratio of lemonade to orange juice.
Rosie uses 6 litres of lemonade.
How much orange juice does Rosie use?

Answer 1

Answer: 4

Explanation:

Matthew makes a drink using lemonade and orange juice.

210ml of his drink was lemonade

140ml of his drink was orange juice

Based on the above, we can see that the ratio of lemonade to orange juice is 3:2. 70 is a common factor to 210 and 140. 210/70 = 3 while 140/70 = 2.

Therefore, since Rosie uses 6 litres of lemonade, the amount of orange juice that Rosie use will be:

= 6 × 3/2

= 4

Rosie needs 4 litres of orange juice.