225 percent
Step-by-step explanation:
150 is the whole and 150 divided by 150 is 1.
1 whole is 100 percent
15/2 = $7.5 per hour
7.5 times 5 = $37.50 earned in 5 hours
3/12 + 10/12 = 13/12 because the points lie in-between the 1/6 and 2/6 marks and the 6/6 and 7/6 marks.
P(picking one defective) = 3/10
P(picking a 2nd defective) = 2/9
P(1 and 2 defective) = 3/10 x 2/9 = 6/90 = 0.066
Second method using combination:
³C₂ / ¹⁰C₂ = 1/15 = 0.066
