Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
Algebra 2 Word Problem Help?
Okay. Help me here, please. This is gibberish through my eyes.
A pet store receives a shipment of pet foods at the beginning of each month. Over a three month period, the store received 1770 pounds of dog food, 1165 pounds of cat food, and 365 pounds of bird seed. Write and solve a system of equations to find the number of pounds of pet food in each of the three shipments.
Then there's a chart:
Dog food- 1st shipment: 60% 2nd shipment: 50% 3rd shipment: 50%
Cat food- 1st shipment: 25% 2nd shipment: 35% 3rd shipment: 45%
Bird seed- 1st shipment: 15% 2nd shipment: 15% 3rd shipment: 5%
Thanks so much for any help...
3 Answers
- 1 decade agoFavorite Answer
I'll do cat and bird seed for you. total cat food is 1165.
and 1st shipment of cat food is 25%.
So... 0.25 x 1165 <-- 1st shipment
2nd shipment is 35%
so... 0.35 x 1165 <--- 2nd shipment
3rd shipment is 45%
so... 0.45 x 1165 <---3rd shipment
365 bird seeds.
1st shipment is 15%
so... 0.15 x 365 <---1st shipment
2nd shipment is 15%
so... 0.15 x 365 <--- 2nd shipment (same as 1st shipment)
3rd shipment is 5%
so... 0.05 x 365 <---3rd shipment
Source(s): ur welcome - 5 years ago
x is the first even number x + 2 is the second even number and x + 4 will be the third even number all of these numbers add up to 66 so x + (x + 2) + (x + 4) = 66 3x + 6 = 66 3x = 66 - 6 3x = 60 x = 60/3 x = 20 So the three numbers are 20, 22, and 24 M = 4S M = 2S + 20 4S = 2S + 20 2S = 20 S = 10 Son = 10 years therefore Man = 40
- enginerdLv 61 decade ago
let
x= total lbs in the first shipment
y= total lbs in the second shipment
z= total lbs in the third shipment
so, first look at the dogfood
we know that 60% of first shipment is dogfood, and the other percentages, and we know the total dogfood so we can right a dogfood equation
.6x+.5y+.5z=1770
the other two equations (cat and bird) work the same
then you have three equations with three unknowns and you can solve them in a number of ways (combination, substitution, matrix, etc)
good luck