Hi,

Please give me a hint on how to setup the equation for this word problem.

Mickey and Minnie are on different mobile plans.

Minnie pays 55 cents a call and 3 cents a minute

Mickey pays 51 cents a call and 4 cents a minute

If a call costs the same on both plans, how long is the call?

My first guess is

.55 + .03x = .51 + .04x

And then solve for x?