Question

3 of the balls in a box are red. The rest are green and yellow. The ratio of the number of green balls
to the number of yellow balls is 5:3. If there are 10 less yellow balls than green balls, how many red
balls are there?​

Answer 1

Answer:

3

Step-by-step explanation:

let the total number of green ball is = x

green ball : yellow ball = 5 : 3

∴number of yellow ball = (x-10)

∴  x :(x-10) = 5:3

or, 5x-50 = 3x

or,  2x      = 50

or,     x     = 25

hence the number of green ball = 25

                  ,,           ,,   yellow   ,,  =  15

                  ,,           ,,    total     ,,  = (25+15+3) = 43

the number of red balls = 3