total number of beads --- x
yellows ----- (2/5)x = 2x/5
remaining: 3x/5
green ---- (7/13)(3x/5) = 21x/65
rest are black.
black = x - 21x/65 - 2x/5
= 65x/65 - 21x/65 - 26x/65
= 18x/65
yellow = blacks + 32
2x/5 = 18x/65 + 32
times 65 , the LCD
26x = 18x + 2080
8x = 2080
x = 260
so subbing in my definitions
104 are yellow, 84 are green and 72 are black
check:
-- are there 32 more yellows than blacks ?? , YES
2/5 of my sister's beads are yellow, 7/13 of the remaining beads are green. The rest of the beads are black. If there are 32 more yellow beads than black beads, how many beads are green.
1 answer
1 answer