Tommy works two jobs. As a clerk he earns
$7 an hour. As a receptionist he makes $9 an
hour. One week he worked 24 hours and
earned $200. How many hours did he work
at each job that week?

Clerk: 8 hours

Receptionist: 16 hours

Step-by-step explanation:

Hours as a clerk: x

Hours as a receptionist: y

x + y = 24

x = 24 - y

7x + 9y = 200

7(24 - y) + 9y = 200

168 - 7y + 9y = 200

2y = 32

y = 16

x = 24 - 16 = 8

i really dont know

step-by-step explanation:

7 weeks

step-by-step explanation:

convert each fraction to the least common multiple of 20, so 3/4 = 15/20 & 1/10 = 2/20, then divide 15 by 2 and you get a little over 7, so the food will last 7 weeks.