One angle of a right angled triangle is 60%. Find the other angle in degree

On saturday a souvenir shop had 125 customers.sixty four percent of the costumers paid with a credit card. how many costumers paid with cash?

Money off coupons have been circulated to 300 households. only 2/5 of these were redeemed (used) in the local supermarket to get a free shampoo. what fraction of coupons were unused? (ps: write how you got the answer)

18 16 11 45 33 11 33 14 18 11 what is the mode for this data set