If A+B=100 & A-B=60 then A÷B=?

A. 2
B. 4
C. 5
D. 6


Explanation

If A+B=100 & A-B=60 then A÷B=4

A+B=100
80+20=100
A-B=60
80-20=60
A÷B= 4

80÷20=4


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