Divide 711 in the ratio 4:5
Add 4+5 (which is 9)Tell them to divide 711 by 9 (=79)Multiple 79 by both values (79 x 4):(79 x 5)Answer is 316 : 395Explain that there is a way of finding out if they are correct. This is by adding 316 and 395 - it should equal to 711. And it does.
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Related Maths GCSE answers
All answers ▸Solve the simultaneous equations: y = x + 6, x^2 + 2y = 9
How do we solve simultaneous equations, say for example x + 4y = 20 and 2x - 2y = 10 ?
Given the area of the pool is 63m^2, what is the value of x?
Factorise x^2+7x+10 to find the roots of the equatino x^2+7x+10=0