Answer:
$52.50
Step-by-step explanation:
25% = 0.25
All you have to do to find out the amount of the discount is multiply the original price by the sale percentage.
210 x 0.25 = 52.50
Probability of getting a pen in the first box:
7/12 = 0.58
0.58 x 100% = 58%
probability of getting a crayon in the second box:
5/10 = 1/2
half of 100 is 50, so 50%
or:
1/2 x 100% = 50%