The average distance from the sun to venus is 67,237,910 miles. the average distance from the sun to earth is 92,955,807 miles

How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?

Select all of the following expressions that are equal to 2.5.

Sam opened a money-market account that pays 3% simple interest. he started the account with $7,000 and made no further deposits. when he closed the account, he had earned $420 in interest. how long did he keep his account open?