Maya spent 40% of her savings to pay for a bicycle that cost her $85. a. how much was in her savings to begin with? explain your answer and show your work. and. b. how much money does she have left in her savings after buying the bicycle? explain your answer and show your work.

1,407.5 hours

step-by-step explanation:

we first convert all the time to hours and then sum them up.

there are 24 hours in 1 day, in 58 days, there are 24 x 58 = 1,392 hours.

there are 60 minutes in 1 hour, thus, 30 minutes will be equivalent to 30 / 60 = 0.5 hours.

therefore, the number of hours it will take mercury to complete a full rotation is 1,392 + 15 + 0.5 = 1,407.5 hours