Asked by alisha

mark is growing tomatoes in his greenhouse and needs to fill them with fertiliser. The ratio of concentrated fertiliser to water is 1:6.
If mark needs 21 litres of diluted fertiliser, how much concentrated fertiliser and water will he need?

Answers

Answered by Scott
1 + 6 = 7

7 k = 21 ... k = 3

3 water and 18 fertiliser
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