Answer:
Here x is the number of grams of the 5% tin alloy and y is the number of the 45% tin alloy,
Since, x gram and y gram is mixed to obtain 100 gram of alloy,
⇒ x + y = 100 --------(1)
Also, in the resultant alloy there is 25 % of tin,
Thus, 5% of x + 45% of y = 25% of 100
⇒ 5 x + 45 y = 2500
⇒ x + 9 y = 500 ------(2)
Equation (1) - Equation (2),
- 8 y = - 400
y = 50
By putting the value of y in equation (1),
We get , x = 50
Therefore, 50 gram of alloy that is 5% tin is mixed with 50 gram of alloy that is 45% tin for obtaining 100 gram of alloy that is 25% of tin.
