Question 324111
a cashier has a total of 122 bills, made of fives and tens. the total of the money is $940. how many ten-dollar bills does the cashier have?
F = FIVES 
T = TENS
5F + 10T = 940
5F = 940 - 10T
F = (940 -10T)/5
THERE IS 66 TENS AND 56 FIVES
66 * 10 = 660
56 * 5 = 280
660 + 280 = 940
66 + 56 = 122 BILLS