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Mathematics
Tutor: None Selected Time limit: 1 Day

Sep 27th, 2015

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Question:

50 + 40                                                      = 90

Answer:

D.     10(5 + 4)


Note:

10(5 + 4) = 10    x     9        (5+4=9)

                =  90

Therefore 50  +  40    =  10(5 + 4)

                           90    =  90

Please let me know if you need any clarification. I'm always happy to answer your questions.
Sep 27th, 2015

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