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Question

The sum of two numbers is 40 and their difference is 4. The ratio of the numbers is :


Options:
A .  11 : 9
B .  11 : 18
C .  21 : 19
D .  22 : 9
Answer: Option A

Le the numbers be  `x` and y.  Then

`(x + y)/(x - y)` =  `40/4` =  10  `hArr` `(x + y) `= `10(x - y)`   `hArr`  `9x` = 11y  `hArr`  `x/y`= `11/9`




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