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3 years ago

8

A box contains 146 marbles which are either red or blue. there are 28 more blue marbles than red marbles. how many blue marbles

are in the box?

1 answer:

rusak2 [61]3 years ago

6 0

R + b = 146. Supposing that b=r+28,

r + (r+28) = 146, or 2r + 28 = 146.

Simplifying: 2r = 118. Then r = 59, and b = r+28 = 59+28 = 87 blue marbles

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