A jar of sweets 5 yellow sweets 4 red sweets 8 green sweets 4 orange sweets and 3 white sweets Ola chooses a sweet at random. What is the probability that she pick either a yellow or orange sweet ?

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)