Alex worked at the library 4 hours each night for 20 nights. he earned a total of $640. how much did he earn per hour working at the library?

You put the following items into your rucksack. ham 600 g cheese 380 g tomatoes 270 g how much do all the ingredients weigh in total?

Which of the symbols correctly relates the two numbers below check all that apply 6? 6

Kendra had twice as much money as kareem. kendra later spent $8 and kareem earned $6. by then,the two had the same amount of money. how much money did each have originally?