4. A positive number is 7 times another number. If 15 is added to both the numbers,
then one of the new number becomes 5/2 times the other new number. What are the
numbers?
pls answer fast
Answers
Answered by
2
- 35,5 is your answer.
Step-by-step explanation:
Assume X & Y
X= 7Y (X is a bigger number)
(X+15)=(Y+15)
X+15 = 5/2(Y+15)
X+15= 5Y/2 +75/2
2 (X+15) = 5Y+75
2X+30=5Y+75
2 (7Y) +30 = 5Y+75
14Y+30=5Y+75
14Y-5Y=75-30
9Y= 45
Y= 5
X= 7Y
= 7 (5)
= 35
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