The number of shells in fred's collection is 80% of the number in phils collection. if phil has 80 more shells than fred, how many do they have altogether?

Fred and Phil have 720 shells altogether.

Step-by-step explanation:

To solve the question, create two equations using the information supplied in the question. Solve these equations to find the number of shells that they each have then add these together. Note than 80% percent is 0.80 in decimal form.

Let Phill's number of shells be x.

Let Fred's number of shells be y.

y = 0.80x equation 1

x = 0.80x+80 equation 2

Solving equation 2:

1x-0.80x = 80

0.20x = 80

x = 80/0.20 = 400 shells

Therefore y = 0.80×400 = 320 shells.

Total = 400+320 = 720 shells.

i dont know it

step-by-step explanation:

the camry sales+accord sale=828,000. to make it so the two numbers are 18 thousand apart and still equal 828,000, you first need to find out what half of 828,000 is. 828,000/2=414,000. for the two numbers to equal 828,000, you have to add the same amount as you subtract from the middle. in this case, the number is 9,000 because it's half of 18,000. to equal 828,000, you have to add 9,000 to 414,000 for the camry and subtract 9,000 from 414,000 for the accord. 414,000+9,000=423,000.

414,000-9,000=405,000.

423,000+405,000=828,000.

423,000-405,000=18,

hope it