4. A positive number is 7 times another number. If 15 is added to both the number
then one of the new number becomes 5/2 times the other new number. What are the
numbers?
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Answered by
11
Answer:
5
Step-by-step explanation:
Let ,First positive number = 7x
second positive number = x
If 15 is added both numbers then one of the new number becomes 5/2.
5/2 (x+15) = 7x + 15
5x /2 + 75/2 = 7x+ 15
5x/2 -7x = 15 - 75/2
5x - 14x = 30 - 75
- 9x = -45
x = 5
First positive number = 7x =7×5 =35
second positive number = 5
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