Posted by cbse 8th on Friday, July 11, 2014 at 10:20am.
the weight of 4 boxes together is 66.5kg.the weight of box B is 2kg less than box A.and the weight of box C is 1.5kg more than box A.if the weight of box D is 1.5kg more than box C.find the weight of each box

maths  Steve, Friday, July 11, 2014 at 11:10am
look at what we have:
a+b+c+d = 66.5
b = a2
c = a+1.5
d = c+1.5
Start substituting:
a+(a2)+(a+1.5)+((a+1.5)+1.5) = 66.5
a=16.0
b=14.0
c=17.5
d=19.0

maths  Reiny, Friday, July 11, 2014 at 11:13am
b = a2
c = a+1.5
d = c+1.5 = a+1.5 + 1.5 = a+3
a+b+c+d = 66.5
a + a2 + a+1.5 + a+3 = 66.5
4a = 64
a= 16
box A = 16
box B = 14
box C = 17.5
box D = 19
check:
sum = 66.5
All is good.
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