3. Grace can print 250 invitations in 30 minutes. How many invitations can she print in 3 hours? 4. Mother bought 6 cans of milk and she paid Php,94.50.how many invitations can she print in 3hours? 5.Esther and Thelma had 2,300 plotted plants. they sold 736 plants to a business man. how many plants did they have left?