Answer:
583.8lbs
Step-by-step explanation:
So first you have to find the weight of 1 gal to do that you must take the weight of the 5 which is 41.7lbs and divide it by 5 to get 8.34lbs/gal. Then multiply that by 70 gallons to get the total weight of 583.8lbs.
7x + 15x= 21x
7x + 15x
= (7 + 15)x
= 22x
aline it like that then do 6×0 then put that answer ,you know what I'm jut going to show you. 60×
16
360
600
↑then add 360 and 600 and that's all. Sorry that the numbers look all funny.
23