# math

Divide 25 in two parts such that its product is 126

1. One part must be a multiple of 2 to get the even number. I worked up the even numbers to get the product you indicate, but the closest I could get was 8*17 = 136.

Do you have a typo?

posted by PsyDAG
2. its a question involving simultaneous equations.

1) xy = 126

2) x+ y = 25

Inserting 2) into 1):

(25-x)x = 126

-x^2 +25x-126 = 0

Use the ABC formula, and you get

x= 18 or x = 7

because 18 + 7 is 25 and 18 x 7 =126.

posted by Bobby
3. i think its a typo....

posted by Bobby
4. Divide 25 into two parts such that one of them multiplied by the cube of the other is a maximum. What is the value of the larger part?

posted by Jesse
5. FIND THE NUMBER N SUCH THAT WHEN 1/3 OF IT IS ADDED TO 8 THE RESULT IS THE SAME AS WHEN 1/2 OF IT IS SUBTRACTED FROM 18

posted by AYODEJI

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