A store reduces the price of a 50 inch television by 20% on Thursday and then reduces that price by another 15% on Sunday. If the final price of the television is 170, what was the original price before Thursday's discount?

the original price before Thursday's discount is $250

Step-by-step explanation:

Let x represent the original price before Thursday's discount.

The store reduces the price of a 50 inch television by 20% on Thursday. It means that the amount by which it was reduced is

20/100 × x = 0.2x

The new price on Thursday would be

x - 0.2x = 0.8x

The store then reduces that price by another 15% on Sunday. It means that the amount by which it was reduced is

15/100 × 0.8x = 0.12x

The new price on Sunday would be

0.8 - 0.12 = 0.68x

If the final price of the television is 170, it means that

0.68x = 170

x = 170/0.68

x = 250

- "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."

0.32

step-by-step explanation:

2.24/7