Abc=60 cm adc=55cm abd=43cm bdc=58cm determinati ad+cd+bd

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

Robin spent 25% more time on his research project than he had planned he’s been an extra h ours on the project which of the following expressions could represent the number of hours rob actually spent on the project

Ineed to know how to write question one in mathematical terms