A cougar is sleeping for 4 hours at night, and a zebra for 2 hours more. How much time do both animals sleep in one week? Think carefully first, then make a decision:
The zebra sleeps for 4 + 2 = 6 hours. During one week, the cougar sleeps 4 * 7 = 28 hours. And the zebra sleeps 6 * 7 = 42 hours. Both animals sleep for 28 + 42 = 70 hours during one week. So, the answer is 70.