jademiles363737
jademiles363737 jademiles363737
  • 13-03-2022
  • Mathematics
contestada

One-fifth of an even number added to one-sixth of the next even number makes a total of 15. find the two numbers​
(Hint: let the number be x and x + 2.)

Respuesta :

rspill6
rspill6 rspill6
  • 13-03-2022

Answer:

40 and 42

Step-by-step explanation:

Let the two even numbers be x and x+2.

"One-fifth of an even number:"  (1/5)x

"one-sixth of the next even number:"  (1/6)(x+2)

Added they make 15:  (1/5)x + ((1/6)(x+2)) = 15

(1/5)x + ((1/6)(x+2)) = 15

(1/5)x + (1/6)x+(1/6)*2 = 15

(1/5)x + (1/6)x+(2/6) = 15

(6/30)x + (5/30)x = 15 - (1/3)

(11/30)x = (45/3) - (1/3)

(11/30)x = (44/3)

x = (30/11)*(44/3)

x = 40

x + 2 = 42

====

Check:

Does

(1/5)(40) + (1/6)(42) = 15?

8 + 7 = 15   YES

The two even numbers are 40 and 42

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