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Answer to Q40

If A + B = 60 and A - B = 40, then what is A ÷ B?

A + B = 60 so, B = 60 - A

A - B = 40 so, A - (60 - A) = 40

A - 60 + A = 40
2A = 40 + 60 = 100
A = 100 ÷ 2 = 50

And, B = 60 - A = 60 - 50 = 10

So, A ÷ B = 50 ÷ 10 = 5

Answer: 5

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484 viewsAug 21, 2019 at 14:57

Answer to Q40

If A + B = 60 and A - B = 40, then what is A ÷ B?

A + B = 60 so, B = 60 - A

A - B = 40 so, A - (60 - A) = 40

A - 60 + A = 40
2A = 40 + 60 = 100
A = 100 ÷ 2 = 50

And, B = 60 - A = 60 - 50 = 10

So, A ÷ B = 50 ÷ 10 = 5

Answer: 5

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