Question

the sum of two numbers is 18.if four times of one is five times the other number. Then the bigger of two numbers is
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Answer 1

Answer:

10

Step-by-step explanation:

Let x and y be the numbers.

x + y = 18

4x = 5y => x = 5y/4

Substitute in first equation

5y/4 + y = 18

9y/4 = 18

y = 18 * 4/9 = 8

x = 10