SOLUTION: Respected Sir/Mam , My question is : QUESTION: a boy weighs 56.7kg.If he reduces his weight in the ratio 7:6, find his new weight. Solution: Original weight of this boy =5

Question 699974: Respected Sir/Mam ,
My question is :
QUESTION: a boy weighs 56.7kg.If he reduces his weight in the ratio 7:6, find his new weight.
Solution: Original weight of this boy =56.7kg
he reduces his weight in the ratio 7:6
His new weight =(6 x 56.7)/7=6 x 8.1=48.6kg
Actually I want to know that why we have multiplied 56.7 with 6 and why not with 7?

Please clear my doubt? Thank you in advance?

Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
a boy weighs 56.7kg. If he reduces his weight in the ratio 7:6,
find his new weight.
:
Follow the procedure and you will see why.
:
Let x = the new weight.
write it as a ratio equation
Old weight is to new weight; =
Cross multiply
7x = 56.7 * 6
7x = 340.2
x =
x = 48.6
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