80 multiplied by what # divided by 2 gives you 77?

77 x 2 = 154
154 ÷ 80 = 1.925

So the answer is 1.925

all you have to do on equations like this is solve is backward to find the variable you are looking for. You have to put all the numbers even after the decimal otherwise it will be incorrect.

Hope this helped. Have a great day!