Question

The ratio of two
ineach
no is 5:7. If 40. is added in each. no
then the ratio become 25:31
Find theno
Sol
Let the post no be sure
no be 5x
and second no is 7x
from the given
condition

$\frac{5x + 40}{?} = \frac{?}{31} \\ 3(5x + 40) = 25(7x + 40) \\ \\ ( ? + 1240) = (175x + ?) \\ 1240 - 1000 = 175x - 155x \\ \\ 240 = 20x \\ x = ?$
​

Answer 1

Answer:

12

Step-by-step explanation:

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