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W:B = 2:5 Total of 21 litres of paint. We want a ratio of W:B = 1:4 = 2:8
Therefore we must add 3 parts of blue paint
2 + 5 = 7 parts total7 parts = 21L1 part = 3L3 parts = 9L
Ther...

A waterfall, labelled A in resource 1, normally forms in the upper valley of rivers where alternating bands of hard and soft rock occur along the river bed. The bands of softer rock are eroded at a faster...

There is no set answer for this question which may appear on a writing paper. In an answer for this question I would look for the use of: a variety of tenses (for the higher grades I would look for at lea...

x = -4/5 or 2
y = 22/5 or -4

Here I would talk about possible killer phrases and answers to this question in Spanishalso we could use this question to spark conversation and lead onto other questions, allowing the student to gain con...