The mean distance from Mars to the sun is 141.633 million miles. The mean distance from Mercury to the sun is 35.983 million miles. Approximately how much closer to the sun is Mercury than Mars?

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)