Derek is 7 years older than Vivian. In 6 years the sum of their ages will be 75. How old is Derek now?
1 answer:
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Question:
For every 1 litre of water used to make a medicine, 600 ml of sucrose and 150ml of saline solution are used.
Express the amount of water, sucrose and saline solution needed as a ratio in its simplest form.
Answer:
Step-by-step explanation:
Given
Required
Express as a ratio to the simplest form
First convert the volume of water to mL
Express as ratio:
Divide through by 10
Divide through by 5
<em>The ratio can not be further simplified</em>