Question

3/5 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:

Step-by-step explanation:

the ratio between green and yellow balls is 5:3

3 ÷ 5 × g = g - 10

=> 3 × g = 5 × (g - 10)  

=> 3g = 5g - 50

=> 5g - 3g = 50

=> 2g = 50

=> g = 25.

y = g-10 => 25-10 = 15

25+15=40, and 1 - (3÷5)=2/5.

So 40 balls make up 2/5ths of the total.

40 x (5÷2)=100

100-40=60.

There are 60 red balls.