In the last election, candidate b recieved twice as many votes as canadidate a. canadidate c recieved 15,000 fewer votes than candidate a. if the total of 109,000 votes were cast, how many votes did cadidate b recieved

Atorch and a battery cost 2.50 altogether.the torch costs 1.50 more than the battery.what fraction of the total price is the torch? give your answer in its simplest form.

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

Suppose a laboratory has a 30 g sample of polonium-210. the half-life of polonium-210 is about 138 days how many half-lives of polonium-210 occur in 1104 days? how much polonium is in the sample 1104 days later? 9; 0.06 g 8; 0.12 g 8; 2,070 g