In a chess club, there are x boys and y girls. If 5 more boys and 8 more girls join, there would be half as many boys as girls. Show that y = 2x + 2
Let:x = number of boysy = number of girlstherefore 2(x+5) = (y+8)2x + 10 = y - 8y = 2x + 2
BS
Related Maths GCSE answers
All answers ▸Find an equation of the straight line that is perpendicular to the straight line x + 3y = 7 and that passes through the point (4,9).
If x^2 + y^2 = 20 and y=10 - 2x, find x and y.
White paint costs £2.80 per litre. Blue paint costs £3.50 per litre. White paint and blue paint are mixed in the ratio 3 : 2 Work out the cost of 18 litres of the mixture.
Find the mean, median, mode and range of this data: 2, 5,6,12,5