Bilingual : trilingual = 14 : 3
So, ...
trilingual : total = 3 : (14+3) = 3 : 17
The number of trilingual denizens was (3/17)*3400 = 600.
7 miles per hour.
if you multiply the distance and time by 2 you get 7 miles in 1 hour, or 7 mph
The expected value is $38.46.
The probability of drawing a 10 from any suit is 4/52. Multiply this by the earnings, 500:
4/52(500) = 2000/52 = 38.46
The answer is -13. You figure it out by multiplying 2.5×-5.2=13