A parent rewards a child with 50 cents for each correctly solved mathematics problem and fines the child 30 cents for each incorrectly solved problem. If the child nets $22.00 after 100 problems. How many problems were solved correctly?
ramseykay
8 Apr, 2021
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VTPETERS2002
5 years ago
50x-30(100-x)=2200
50x-3000+30x=2200
80x=2200+3000
80x=5200
x=5200/80
x=65 correct answers.
100-65=35 incorrect answers.
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