Question

Please help me with this math question​

Answer 1

Total=110=D+J+K

D=(2/3)J

K=2J

...a...

If J=x,

D=(2/3)x ⟨— i

K=2x ⟨— ii

...b...

T=D+J+K

110=(2/3)x+x+2x ⟨— b

...c...

110=2x/3+3x/3+6x/3

110=11x/3

330=11x

330/11=x

30=x

D=(2/3)x

D=(2/3)(30)

D=20

Dennis received 20 marbles ⟨— c