Question

divide 25 into two parts such that 7 times the first part added to 5 times the second part makes 139​

Answer 1

Step-by-step explanation:

Let first part be x

Hence, second part = 25 - x

According to the given condition:

7x + 5(25 - x) = 139

7x + 125 - 5x = 139

2x = 139 - 125

2x = 14

$\therefore x =\frac{14}{2} \\</p><p>\therefore x = 7\\</p><p>\implies 25 - x = 25 -7=18$

Thus, the two parts of 25 are 7 & 18.