Question #78df6

1 Answer
BillytheKid
Feb 7, 2018

300 balls in total.
40% yellow:
10% = 30 balls,

#rarr# 40% = 4x30 = 120 yellow balls.

#rarr# 300 - 120 = 180 white balls.

Found:
20% yellow balls:
10% of 120 = 12, #rarr # 20% = 2x 12 = 24 Yellow balls;

80% white balls:
10% of 180 = 18, #rarr# 80% = 8 x 18 = 80 + 64 = 144 White balls.

#rarr# Total amount found: 144 + 24 = 168 nalls in total

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