A factory makes 560 fans in 7 days with the help of 20 machines. How many fans can be made in 12 days with help of 16 machines?
Answer: 768
Explanation
Fans∝Machines×Days
Let be the number of fans produced in 12 days with 16 machines.
Set up the proportion:
560/20×7=x/16×12
560/140=x/192
4=x/192⇒x=4×192=768
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