Level 2
Harris sold 8 cats, 5 hamsters and some birds. He sold 7 more birds than hamsters. What fraction of the total number of animals sold were hamsters?
Level 3
Joy took 2 hours 20 minutes to complete an artwork. Dane took 60 minutes less to complete the artwork. How long did Dane take to complete the artwork? Express the answer in h and min.
Level 3
Dennis saved some money on the first week. Each following week, he managed to save $8 more than the week before. He saved a total of $100 after 4 weeks. How much money did he save on the 3rd week?