Two angles form a straight angle. The measure of one angle is 13 more than four times a number. The measure of the other angle is 10 times the number. Find the measure of each angle.

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)