Some one please help I've been stuck on this question and dont know how to work it out

1/5 or 20%

Step-by-step explanation:

The total number of paintings is 60.

60 = x (x − 2) + x + 2x + 8 + 10

60 = x² − 2x + x + 2x + 18

0 = x² + x − 42

0 = (x + 7) (x − 6)

x = -7 or 6

Since x can't be negative, x = 6.  So the number of paintings from the 20th century is 6 (6 − 2) + 6 = 30.

The number of paintings that are both British and from the 20th century is 6.

So the probability that a painting from the 20th century is also British is 6/30 = 1/5, or 20%.

7.3

step-by-step explanation:

48 / 6 = x

in this case, x will equal the amount of money in each card!

x therefore will be 8.

trent had $8 in each birthday card.