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Mother, daughter and infant total weight is 74 kg. Mother's weight is 46 kg more than daughter and infant's weight. Infant's weight is 60% less than daughter's weight. Find daughter's weight.
Read Solution (Total 14)
-
- 10 years
- 11 years agoHelpfull: Yes(28) No(6)
- Total Age is M+D+I=74
given that M-D-I=46
solving above 2 eq's we get Mother age = 60
now remaing age=14 which is sum of daughter and Infant age.
Given that Infant age is 60% lass than Daughter.
i.e If daughter age is 100 then infant age is 40.
So ages ratio Of D and I is 100 : 40 i.e ... 5 : 2
So (5+2)=7 parts equal to 14.
then 5 parts equal to 10.
2 parts equal to 4.
daughter age is =10
and infant age is = 4. - 10 years agoHelpfull: Yes(10) No(3)
- Daughters age is 10 years
M+D+I = 74 (Given)
M= (D+I)+46
so 2(D+I)=74-46
=28
therefore D+I = 14
and given that
I= d*40/100;
means i=2/5d
so adding 7d/5=13
therefore d=10
and infant is 4 years
and mom is 60 years old - 10 years agoHelpfull: Yes(8) No(0)
- ten is the corect ans
- 11 years agoHelpfull: Yes(4) No(2)
- m+d+i=74
d+i+46=m
2(d+i)=28
d+i=14
i=d-((60100)d)
d=10, i=4 - 10 years agoHelpfull: Yes(4) No(0)
- Ans 10 kg
M=46+D+I
M=+D+I=74
46+2(D+I)=74
D+I=14
D+0.4=14
d=14/0.4
d=10
Hence Proved - 9 years agoHelpfull: Yes(2) No(5)
- 10kg=(y+7y/5+46+2y/5)
- 10 years agoHelpfull: Yes(1) No(0)
- mother=60 daughter=10 infant=4
- 10 years agoHelpfull: Yes(1) No(1)
- Mother + Daughter + infant =74-------1
Mother=Daughter + infant+46---------2
infant = 0.4 Daughter--------------------3
substitute 2 & 3 in 1
(Daughter+infant+46)+daughter +(0.4 Daughter)=74
Daughter+0.4 Daughter+46+Daughter+0.4 Daughter=74
2.8 Daughter=74-46
Daughter= 28/2.8=10
so that Daughter Weight= 10 k.g - 7 years agoHelpfull: Yes(1) No(0)
- can u plz explain.........mr aman
- 11 years agoHelpfull: Yes(0) No(0)
- 10
m+D+I=74
M-D-I=46
I=2/5 D
on solving this we can get D=10 - 7 years agoHelpfull: Yes(0) No(1)
- 10 kg daughter 4 kg infant and 60 kg mother
- 7 years agoHelpfull: Yes(0) No(0)
- m+d+i=74------------------1
m=46+d+i-----------------2
i=d-0.6d(since infant's weight iss 60% less than daughter's)
so, i=0.4d
m=46+d+0.4d (from 2)
from 1 and 2
46+d+0.4d+d+0.4d=74-----------------3
Solving 3 we get d= 10
daughter's weight is 10 kg - 6 years agoHelpfull: Yes(0) No(0)
- If daughter's weight is x kg, solve for,
{46+x+(2x/5)}+x+(2x/5)=74.
Thus, x=10kg. - 5 years agoHelpfull: Yes(0) No(0)
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* F and J must be same group
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