Question

Sheila has 5 times as many markers as Dave. together they have 18. how many markers does Sheila have???

Answer 1

5d+d=18
18 divided by 6 is 3 so Sheila has 15 markers and Dave has 3

Answer 2

Sheila has 5 times.
Dave has 1 time.
Together they have (5 + 1) = 6 times.

6 times = 18

Divide each side by 6 :    1 time = 3

Sheila has 5 times = (5 x 3) = 15 markers.

Dave has 1 time = 3 markers.

Total = (Sheila + Dave) = (15 + 3) = 18 markers.
Check, check , and double check.