A light bulb consumes 960 watt-hours per day how long does it take to consume 5040 watt-hours?

Pls! does anybody know a shortcut for answering these types of questions in the future?

Astore sells two types of radios. one type sells $87 and the other for $119. if 25 were sold and the sales were $2495, how many of the $87 radios were sold a) 5 b) 20 c) 15 d)10

What is the order of these fractions from least to greatest 2/3 7/10 5/8 65/100