Answer: 3.5a+5b=470 and a+b=115
Step-by-step explanation:
14.4, 120% of 12 is 100+20, 12+2.4 is 14.4
Answer:
Step-by-step explanation:
Bertie's $12.00 will buy (12) / ($3.75/gal), or 3.2 gallons.
The ordered pair in quewtion is (3.2, $12),
First, find the rate of flowers bought per hour:
48 / 3 = 16 flowers per hour.
Then, to find the amount bought after 2 hours, multiply the 16 flowers per hour by 2.
16 * 2 = 32.
After 2 hours, she will have bought 32 flowers.
Answer:
12 hr. mowing lawns
28 hr. working at Mc Donalds
Step-by-step explanation:
Let t = time mowing lawns
then 40 - t = time working at McDonalds
7,5(40 - t) + 6t = 282
300 - 7.5t + 6t = 282
-1.5t = -18
t = 12 hr. mowing lawns
40 - t = 40 - 12 = 28 hr. working at Mc Donalds