Doughnuts at one shop cost £2.20 each. Doughnuts at a second shop cost 25% more. What is the difference in the cost of doughnuts at the two shops?

0.55

Step-by-step explanation:

diference= 25/100*2.20=0.55

£0.55

Step-by-step explanation:

Find the increase.

2.2 × (1 + 25%)

2.2 × 1.25

= 2.75

The second shop doughnuts cost £2.75.

Find the difference.

2.75 - 2.2

= 0.55

The difference is £0.55

- "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."