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The sum of the three numbers is 98. if the ratio between the first & second is 2:3 & that between the second and third is 5:8 , then the second number is ??
Read Solution (Total 5)
-
- a:b =2:3 and b:c =5:8
=> b:c = (5*3/5) : (8*3/5) (multiplying with 3/5 on both sides to make b ratio 3)
=> b:c = 3 : (24/5)
=> a:b:c = 2:3:(245)
=> a:b:c = 10:15:24
a+b+c = 10x+15x+24x =98
=>49x=98
=>x=2
so second number is 30 - 9 years agoHelpfull: Yes(1) No(0)
- a+b+c=98
a/b=2/3 >>a=2b/3
b/c=5/8 >>c=8b/5
so putting these values in eqn 1
2b/3+b+8b/5=98
b=36.ans - 9 years agoHelpfull: Yes(0) No(2)
- Total Sum of three Numbers is 98.Assume them to be a,b,c
a:b=2:3
b:c=5:8
a+b+c=98
Given
a:b=2:3
so,
a/b=2/3
a=2b/3
Given
b:c=5:8
b/c=5/8
c=8b/5
Now Substituting in the equation a+b+c=98
(2b/3)+b+(8b/5)=98
10b+15b+24b=1470
b=30
Then
a=20======>a=2b/3=(2*30)/3
c=(8*30)/5=48 - 9 years agoHelpfull: Yes(0) No(0)
- A;B=2:3 AND B:C=5:8 then A:B:C=10:15:24 after that we have to find 10x+15x+24x=98(given), we obtain x=2 den second number is 15*2=30 ans
- 9 years agoHelpfull: Yes(0) No(0)
- x:y=2/3.
y/z=5/8
so ,x:y:z=10:15:24
y=30
- 9 years agoHelpfull: Yes(0) No(0)
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