Find the retail price of something that costs $280 with a mark up rate of 75%

The retail price is $ 490

Solution:

Given that,

Cost price = $ 280

Mark up rate = 75 %

We have to find the retail price

Retail price = cost price + 75 % of cost price

Therefore,

Retail price = 280 + 75 % of 280

Thus retail price is $ 490

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.