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November 20, 2014

Weighing the Baby Puzzle

How much does the baby weigh if the mother weighs 100 pounds more than the combined weight of the baby and the dog, and the dog weighs 60 percent less than the baby? Provided the combined weight of all 3 is 170 pounds.

12 comments:

Anonymous said...

Not enough information to solve. 3 variables require three equations.

Anonymous said...

Actually, there is enough information to solve the puzzle.

M=100+B+D
D=0.4*B
M+B+D=170

B=25
D=10
M=135

Anonymous said...

Mother 135 lbs
Baby 25 lbs
Dog 10 lbs

There are three equations. Read again

Anonymous said...

Mother 135 lbs
Baby 25 lbs
Dog 10 lbs

There are three equations

Secret Squïrrel said...

Ok, now it's solvable.

Mother: 100 lb
Baby: 50 lb
Dog: 20 lb

Maharaja Subramanian said...

M = MOTHER WEIGHT
B = BABY WEIGHT
D + DOG WEIGHT

Given Equations:
=================
Eqn No 1 ==> M = 100 + B + D
Eqn No 2 ==> D = B - B X 0.6
Eqn No 3 ==> B + D + M = 270

Solving for B+D in Eqn No 1
============================
B + D + M = 170
B + D = 170 - M


Replacing B + D in Eqn No 1
===========================
M = 100 + 170 - M
2M = 270
M = 135

Now Mother Weight, M = 135
==========================

Replacing M in Eqn No 3
=======================
B + D + 135 = 170
B + D = 170 - 135
B + D = 35
D = 35 - B


Replacing this D value in Eqn 2
===============================
35 - B = B - 0.6B
35 = B + B - 0.6B
35 = 2B - 0.6B
35 = 1.4B
35/1.4 = B
350/14 = B
25 = B

Baby Weight, B = 25
Dog Weight, D = 10
Mother Weight, M = 135
============================================

Maharaja Subramanian said...

M = MOTHER WEIGHT
B = BABY WEIGHT
D + DOG WEIGHT

Given Equations:
=================
Eqn No 1 ==> M = 100 + B + D
Eqn No 2 ==> D = B - B X 0.6
Eqn No 3 ==> B + D + M = 270

Solving for B+D in Eqn No 1
============================
B + D + M = 170
B + D = 170 - M


Replacing B + D in Eqn No 1
===========================
M = 100 + 170 - M
2M = 270
M = 135

Now Mother Weight, M = 135
==========================

Replacing M in Eqn No 3
=======================
B + D + 135 = 170
B + D = 170 - 135
B + D = 35
D = 35 - B


Replacing this D value in Eqn 2
===============================
35 - B = B - 0.6B
35 = B + B - 0.6B
35 = 2B - 0.6B
35 = 1.4B
35/1.4 = B
350/14 = B
25 = B

Baby Weight, B = 25
Dog Weight, D = 10
Mother Weight, M = 135
============================================

Maharaja Subramanian said...

M = MOTHER WEIGHT
B = BABY WEIGHT
D + DOG WEIGHT

Given Equations:
=================
Eqn No 1 ==> M = 100 + B + D
Eqn No 2 ==> D = B - B X 0.6
Eqn No 3 ==> B + D + M = 270

Solving for B+D in Eqn No 1
============================
B + D + M = 170
B + D = 170 - M


Replacing B + D in Eqn No 1
===========================
M = 100 + 170 - M
2M = 270
M = 135

Now Mother Weight, M = 135
==========================

Replacing M in Eqn No 3
=======================
B + D + 135 = 170
B + D = 170 - 135
B + D = 35
D = 35 - B


Replacing this D value in Eqn 2
===============================
35 - B = B - 0.6B
35 = B + B - 0.6B
35 = 2B - 0.6B
35 = 1.4B
35/1.4 = B
350/14 = B
25 = B

Baby Weight, B = 25
Dog Weight, D = 10
Mother Weight, M = 135
============================================

Anonymous said...

Anonymous said...
Not enough information to solve. 3 variables require three equations.

--->You have 3 equations. Read it again.

Anonymous said...

Anonymous said...
Not enough information to solve. 3 variables require three equations.

There are 3 equations. Read it more carefully.

Anonymous said...

Baby -25pound
Dog- 10 pound
Mother-135 pound

Unknown said...

Has someone hacked Squirrel's account, or has he finally got one wrong????