6th grade math
posted by LOU LOU .
each new backpack at delias bookstore comeswith one free gift.the ber graph below shows the number of differt types of freegifts that wrw placed in 50 different backpacks.
NEW BACKPACKS
WATER BOTTLE15
KEY RING 20
DAILY PLANNER  10
NOTEBOOK  5
if the distribution ratio of free gifts placed in backpacks remains the same ,how many water bottles should be placed in 100 backpacks?
f.15 water b.
g.30 water b.
h.45 water b.
i.60 water b.
please HELP ME

If 15 water bottles were in 50, what number should be in 100 backpacks to keep the ratio the same?
15/50 = X/100
Solve for X.