Art Exhibition of Math Problem "June 1st" Experimental Primary School

Every seven balloons form a group, so a balloon has:

50/7=7 (group). . . . . . 1 (piece)

So the last balloon is the first in the next group, and it is pink.

Pink is 2*7+ 1= 15 (pieces).

Red 3*7=2 1 (piece)

Green 2*7= 14 (piece)

So pink accounts for 15/50=3/ 10.

Red 2 1/50 green is 14/50=7/25.

A: Pink balloons account for 3/ 10, red balloons account for 2 1/50, and green balloons account for 7/25.