Set up two equations:
1st: P (for Price family) + J (for Jenkins family) = 45 hours
2nd: 20P + 35J = 1200 liters
Rewrite the first equation as P = 45 – J
Replace P in the second equation:
20(45-J) + 35J = 1200
Simplify:
900 -20J + 35J = 1200
900 +15J = 1200
Subtract 900 from both sides:
15J = 300
Divide both sides by 15:
J = 300/15
J = 20
Jenkins used theirs for 20 hours
Price used theirs for 45-20 = 25 hours.
Answer: rational
a rational number is a number that can be expressed by a quotient or a fraction
Answer:
1 7/10
Step-by-step explanation:
4 1/5-2 1/2 = 17/10 = 1 7/10
Answer:
35 sandwiches
Step-by-step explanation:
62÷2=31
31+4=35
