Let 'x' represent the total distance from point A to point B
During the first hour he gets 0.25 of the way there: 0.25x
During the second hour he covers an additional 0.2 of the distance: 0.2x
During the third hour, he covers 0.3 of the distance: 0.3x
The total distance the biker traveled is:
0.25x + 0.2x + 0.3x = (0.25 + 0.2 + 0.3)x = 0.75x
The biker has: x - 0.75x = (1 - 0.75)x = 0.25x of the total distance left to go.
Answer:
The small box contains 21 cans
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Step-by-step explanation:
Represent the small box with S and the large with L.
For Estelle:

For the boy:

Required
Determine the cans in the small box
--- (1)
--- (2)
Divide (2) through by 4

Make L the subject

Substitute 46 - S for L in (1)


Open bracket


Collect Like Terms


Divide both sides by 2

<em>Hence, the small box contains 21 cans</em>