construct a word problem on simultaneous linear eqns in two variables so that the value of one of the variables will be 10.(persons rupees...etc)
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Problem:
If twice the age of son is added to the age of the father, the sum is 56; But if twice the age of the father is added to the age of the son, the sum is 82. Find the ages of father and son, respectively.
Answer:
Let the age of son be x and age of father be y.
Given 2x + y = 56
x + 2y = 82
On solving (1) and (2), we get
2x + y - 2x - 4y = 56 - 164
-3y = -108
y = 36.
Substitute y in any above equations, we get
2x + 36 = 56
2x = 20
x = 10
The age of the father is 36 and the age of son is 10 years.
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