SOLUTION: ram is 7 times old as his daughter. after 5 years he will be 5 times old as his daughter. what are their present age?

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Question 934862: ram is 7 times old as his daughter. after 5 years he will be 5 times old as his daughter. what are their present age?
Found 3 solutions by josgarithmetic, vicgonzerx, MathTherapy:
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
r and d, their ages now.
system%28r=7d%2C%28r%2B5%29=5%2A%28d%2B5%29%29;
If this makes sense, then you have some important understanding. Solve the system for r and d.


5d%2B25=r%2B5
5d%2B20=r
-
r=7d=5d%2B20
2d=20
highlight%28d=10%29

highlight%28r=70%29

Answer by vicgonzerx(31) About Me  (Show Source):
You can put this solution on YOUR website!
letx=ram age
y=daughter's age
x=7y
after 5 years
x+5=5(y+5)
x+5=5y+25
7y+5=5y+25
7y-5y=25-5
2y=20
y=10
x=7y
x=7(10)=70
therefore present age is ram=70 and daughter=10
check afetr 5 years ram is 75 and daughter is 15
15x5=75

Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

ram is 7 times old as his daughter. after 5 years he will be 5 times old as his daughter. what are their present age?


Let daughter's current age, be D

Then Ram's current age = 7D

We then get: 7D + 5 = 5(D + 5)

7D + 5 = 5D + 25

7D - 5D = 25 - 5

2D = 20

D, or daughter's current age = 20%2F2, or highlight_green%2810%29

Ram's current age: 7(10), or highlight_green%2870%29