If a=10, What is a/ 2 plus 9

John bought 5 lemons and used 2 of them for a salad how much did he use for.a salad . he used % of the lemons.

Lola says these two expressions have the same value. expression a expression b which explains whether lola is correct?

Sweet t saved 20 percent of the total cost of the green-eyed fleas new album let there be fleas on earth. if the regular price is $30 how much did sweet save