Question

if there are 25 red and 35 blue marbles in a bag. how many more red marbles be added to make ratio of red to blue marbles 4:5​

Answer 1

Answer:

3

Step-by-step explanation:

3 more red marbles need to be added to make the ratio 4:5

ratio of 25red and 35 blue marbles = 5/7

we have to make the ratio 4:5

the number of blue needs to remain constant

35/5=7

7×4=28

28-25=3

to make 25, 28 we need to add 3 more red marbles