8biscuits cost 24p altogether. how much do 5 cost

15p should be your answer

Step-by-step explanation:

Well, 8 biscuits cost 24p all together, and 24/8=3 so 1 biscuit is 3p.

So now 3*5= 15 so 5 biscuits is 15p

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."