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Question 1144090: can you please help me solve The mass of each boy and each girl in a class is 44kg and 38kg respectively.Ifthe mass of 15 children is 630kg,Find the number of boys
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! can you please help me solve The mass of each boy and each girl in a class is 44kg and 38kg respectively.Ifthe mass of 15 children is 630kg,Find the number of boys
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m = 44
g = 38
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m + g = 15 ---- number of kids
44m + 38g = 630 --- total mass
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You can multiply the 1st eqn by either 44 or 38, then subtract.
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Or, you can solve the 1st eqn for either m or g, then sub into the 2nd eqn.
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