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A shop displays a total of 50 type A and type B mice. The cost of a type A mouse is $6 and that of a type B mouse is $13. If the total cost of all 50 mice is $433, find the number of type A mice displayed.
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A shop displays a total of 50 type A and type B mice. The cost of a type A mouse is $6 and that of a type B mouse is $13. If the total cost of all 50 mice is $433, find the number of type A mice displayed. The answers is 31​

User Josh Goebel
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4 votes
31 Type A
19 Type B

A+B= 50

6a+13b=433

a =31, b=19
User ZSkycat
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