5
Question
There are 850 shells in a box. Among them, there are 354 red, 287 yellow, and a few blue shells. How many blue shells are there?
There are 850 shells in a box. Among them, there are 354 red, 287 yellow, and a few blue shells. How many blue shells are there?
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Solution
The correct option is D 209
Total number of shells = 850
Number of red shells = 354
Number of yellow and blue shells = 850−354=496
Number of yellow shells = 287
Number of blue shells = 496−287=209
Hence, there are 209 blue shells.
Total number of shells = 850
Number of red shells = 354
Number of yellow and blue shells = 850−354=496
Number of yellow shells = 287
Number of blue shells = 496−287=209
Hence, there are 209 blue shells.
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