A car was bought for £18,000.
It was sold for £15,300.
Express this as a percentage decrease.

15%

Step-by-step explanation:

when 18000 is 100%, 10% is 1800. So to make 15300 we need 8.5 1800s. So 85% of 18000 is 15300 so the rest is 15%. The answer is 15%

15%

Step-by-step explanation:

[ (18,000-15,300) / 18,000 ] x 100

= (27,00 / 18,000) x 100

= 0.15 x 100

= 15%

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0