Really easy maths !
jean decides to buy a watch. 20% vat is added to the price of the watch, which now costs £285
how much does the watch cost without vat

b) the watch is now on sale at 28% off. whats the new price of the watch? ?

120% is 285 pounds

divide by 120

1% =

times this number by 100 to get the answer

(sorry i dont hv a calculator rn and im in a hurry)

b) 100-28 = 72%

use the value for 1% from before and times by 72

72 dollars?

Step-by-step explanation:

Im not that good at math so72 dollars maybe

- "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."

answer: yes, since the line has a steeper rate of change than the exponential the y-values will be greater and they will only intersect one time.