Find x.

A: 60
B: 36
C: 24
D: 12
E: 18

Do you mind if you guys me with this question i’m on number 8

Sum of the interior angles of a pentagon

If it 8 inch candle burns at 7/10 inch per hour and a 6 inch candle burns at 1/5 inch per hour after how many hours would both candles be the same height