x(g+b) have not finished
.65 g have not finished
.55 b have not finished
.65 g + .55 b = x(g+b)
but
g = 3 b
so
.65(3 b)+.55 b = x ( 4 b )
(1.95+.55)b = 4 x b
x = 2.5/4 = .625
so
62.5 %
There are thrice as many girls as boys at a school. If 35% of the girls and 45% of the boys
have already completed their holiday project, what percentage of the learners still needs to
complete their project?
1 answer
1 answer