Question

Four boxes A, B, C and D together contain 240 balls.
Box B contains twice the number of balls in box A.
Box C contains twice the number of balls in box B.
Box D contains twice the number of balls in box C.
If the number of balls in box A is x, then choose the correct equation that represents this situation.




Hint
If box A has x balls, Box B will have 2x balls.Similarly, find the number of balls in box C and D in terms of x

Answer 1

Answer:

X+2x+4x+8x=240

15x=240

X=240/15

X=16

Answer 2

Answer:

A = 16 balls

B  = 32 balls

C =  64 balls

D =  128 balls

Step-by-step explanation:

Box A = x balls

Box B = 2*x= 2x balls

Box C = 2x*2 = 4x balls

Box D = 4x*2 = 8x balls

x + 2x + 4x + 8x = 240 balls

15x = 240

x = 240/15

x = 16 balls

A = 16 balls

B = 16*2 = 32 balls

C = 32*2 = 64 balls

D = 64*2 = 128 balls

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