- A80 units
- B60 units
- C70 units
- D100 units
Step-by-Step Solution
. Adding: ; subtracting: . So .
Answer: A) 80 units
Machines A and B make a units and b units an hour. In 3 hours of A and 2 of B they make 360 units; in 2 hours of A and 3 of B they make 340. Find a.
Class 10Work Rates with Two UnknownsAlgebra — Systems of Equations
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