Mark owes his sister $15. He earned $20 for mowing the grass. He gave 1/5 of his earnings to a local charity and then paid his sister. Does Mark have enough to repay his sister the
full amount? Why or why not?

It is saturday morning and jeremy has discovered he has a leak coming from the water heater in his attic. since plumbers charge extra to come out on the weekends, jeremy is planning to use buckets to catch the dripping water. he places a bucket under the drip and steps outside to walk the dog. in half an hour the bucket is 1/5 of the way full. what is the rate at which the water is leaking per hour?