39
Two numbers differ by 5. If their product is 336, then the sum of the two numbers would be:
- A39
- B37
- C43
- D41
Answer not set
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CCommunity
Let the numbers are x and y. then,
⇒ x – y = 5 ------------ (1)
⇒ x × y = 336 ------------ (2)
Now, (x + y)2 = (x - y)2 + 4xy,
⇒ (x + y)2 = 25 + 4 × 336 = 1369,
⇒ x + y = √1369 = 37
⇒ x – y = 5 ------------ (1)
⇒ x × y = 336 ------------ (2)
Now, (x + y)2 = (x - y)2 + 4xy,
⇒ (x + y)2 = 25 + 4 × 336 = 1369,
⇒ x + y = √1369 = 37