A Ratio of the number of girls to the number of boys in band is 10 to 9. There are 50 girls in band. How many boys are in band? (hel meee)​

Kathy spent 5/8 of her money on books and another 1/6 of her money on stationeries.what fraction of kathy’s money was left?

If olu is twice as old as funmi if the sum of their ages is 60 how old is olu

Boris needs to buy plastic spoons. brand a has a box 42 spoons for $2.37. brand b has a box of 72 spoons for $3.57. find the unit price for each brand. then state which brand is the better buy based on the unit price. round your answer to the nearest cent.