And ! at the grocery store watermelon costs $1.27 per pound. if heather buys a 5.5 lb watermelon, which proportion could she use to find out how much it will cost, c? a) 1.27/ 1 = 5.5/ c b) 5.5 /1.27 = 1 /c c) 1./27 5.5 = 1 /c d) 1/1.27 = 5.5 /c