Tonja and Edward are participating in a jog-a-thon to raise money for charity.
Tonja will raise $20, plus $2 for each lap she jogs. Edward will raise $30, plus $1.50 for each lap he jogs. The total amount of money each will raise can be calculated using the following expressions where n represents the number of laps run:
Tonja: 20 + 2n
Edward: 30 +1.50n
Q: After how many laps will Tonja and Edward have raised the same amount of money?

i don't know what to do first with this equation

Question

Tonja and Edward are participating in a jog-a-thon to raise money for charity.
Tonja will raise $20, plus $2 for each lap she jogs. Edward will raise $30, plus $1.50 for each lap he jogs. The total amount of money each will raise can be calculated using the following expressions where n represents the number of laps run:
Tonja: 20 + 2n 
Edward: 30 +1.50n
Q: After how many laps will Tonja and Edward have raised the same amount of money?

i don't know what to do first with this equation

anonymous · Answer

equate the amount 
20 + 2n=30 +1.50n
2n-1.50n=10
0.5n=10
n=20

anonymous · Answer

what did you do with the 30? im confused at the subtract 1.50 on both sides.. how did you get 10? i subtracted 1.50 from 2 and got o.5

anonymous · Answer

30=20=10

anonymous · Answer

nevermind..i found it different way thx:)