The melting point of sodium is 98 degrees Celsius and the melting point of zinc is 420 degrees Celsius. How much hotter is the melting point of zinc than that of sodium?

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

If a baby uses 15 diapers in 2 days how many diapers will the baby use in a year

How much dextrose 70% must be mixed with dextrose 5% to prepare 1,000 ml of dextrose 20%?