solve this !!!
15th one.
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Given sum of two parts = 25
Let first part = x
second part should be = 25 - x
7 times the first part = 7x
5 times the second part = 5( x - 25 )
Given relation between to parts is
7 times the first part added to 5 times
the second part = 139
Now write the word problem into
Linear equation
7x + 5( 25 - x ) = 139
7x + 125 - 5x = 139
2x = 139 - 125
2x = 14
x = 14/ 2
x = 7
Therefore
First part = x = 7
Second part = 25 - x = 25 - 7 = 18
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