A box contains red green and blue marbles. There are 600 marbles in the box. The ratio of red to green to blue marbles is 3:5:7, how many are there of each color?

Step-by-step explanation:

Give the ratio of red to green to blue marbles to be 3:5:7

Total ratio = 3+5+7 = 15

Total marbles = 600marbles

Amount of red = ratio of red/total ratio × 600

Amount of red marbles = 3/15 × 600

Amount of red marbles = 3×40 = 120marbles

Amount of green marbles = 5/15×600

Amount of green marbles = 5×40 = 200marbles

Amount of blue marbles = 7/15×600

Amount of blue marbles = 7×40 = 280marbles

x = 3 ± √(5+y)