21. The number of pennies, nickels, and dimes in a bank are consecutive integers, in decreasing order. If there are n nickels, what is the value of the money in cents?

Nickels = 5(n)

Pennies= 1(n+1)

Dimes= 10(n-1)

I added them together and then I got stuck.

24-25. June and Carlos live 206 km apart. At 8AM June starts driving to Carlos' house at 60 km/h. At 10AM Carlos starts driving to June's house at 82km/h. At what time will they be 15 km apart?

24. Write an equation for the given facts. Let t be the number of hours June drives.

25. Solve the equation and answer the question.

Chart I made

r x t = d

June 60 x t = 60t

Carlos 82 x t+2 = 82(t+2)

I am stuck there too.

Please help!!! This is actually Algebra II but I don't know where to put it.

CHALLENGE PROBLEM

The total of Xanthe's, Yarrow's, and Zeke's ages is 51. Five years from now Yarrow will be the same age as Zeke is now. Six years ago, Yarrow's age was half of Xanthe's age. How old is each now?

Xanthe Now= x

Xanthe Before=???

Yarrow= y

Yarrow in 5 years= y+5=z

Zeke=z

Zeke 6 yrs ago= y-6=1/2(z-6)

Ages: x+y+z=51

I am stuck from here too.