One store billed 60% more in december than it did in november. november's billing was lower than in december billing by how many percents?

Although changes result from business transactions, the equality of the fundamental bookkeeping equation must remain. t/f

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?

Ineed me i stuck and i don’t want to get it wrong