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Dmitriy789 [7]
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?
Mathematics
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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