The sum of the two numbers is 25. If one of the numbers is 10, what is the other number - mathselab.com

The sum of the two numbers is 25. If one of the numbers is 10, what is the other number?

Question


The sum of the two numbers is 25. If one of the numbers is 10, what is the other number?


A. 17
B. 35
C. 12
D. 15


Answer: D. 15


Solution:


Let, one number be x & other be y

Given, x + y = 25. — (1)

x = 10 put the value of x in eq.1

10 + y = 25

y = 25 – 10 = 15

Y= 15.


Hence, the answer is 15.




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