Bateman Enterprises invested in the bonds of Greater Gloucester on January​ 1, 2018. These 10minus​year, $ 400 comma 000 bonds pay interest of 3​% with semiannual payments every June 30 and December 31. The effective rate of interest for similar bonds on January 1 was​ 4%. What is the semiminusannual interest payment received by Bateman for these​ bonds?

An electronics store is running a promotion where for every video game purchased, the customer receives a coupon upon checkout to purchase a second game at a 50% discount. the coupons expire in one year. the store normally recognized a gross profit margin of 40% of the selling price on video games. how would the store account for a purchase using the discount coupon?