Peter, Bob and Jack do a work. If they work in pairs: Peter and Bob can complete it in 12 hours; Bob and Jack can complete it in 10 hours; Jack and Peter can complete it in 15 hours. Peter needs ........ hours to complete this work by himself.

Peter, Bob and Jack do a work. If they work in pairs: Peter and Bob can complete it in 12 hours; Bob and Jack can complete it in 10 hours; Jack and Peter can complete it in 15 hours. Peter needs ........ hours to complete this work by himself.

Peter, Bob and Jack do a work. If they work in pairs: Peter and Bob can complete it in 12 hours; Bob and Jack can complete it in 10 hours; Jack and Peter can complete it in 15 hours. Peter needs ........ hours to complete this work by himself.

1.Peter, Bob and Jack do a work. If they work in pairs: Peter and Bob can complete it in 12 hours; Bob and Jack can complete it in 10 hours; Jack and Peter can complete it in 15 hours. Peter needs ........ hours to complete this work by himself.

2.The product of 2 natural numbers is 2015. Find the smallest possible sum of these two numbers?
Answer: The smallest possible sum of these numbers is ...............

There are 3 children in a family,Jack,Mary and Peter.Mary can clean the house for 1 hour.Jack can do thesame job for 2 hours and Peter needs 6 hours.If theydo the job together then they need ................  minutes.

Task 3. Read and number the sentences in the correct order.

A Bob: I lived in a small and pretty town near London.

B Miss Hien: And where do you live now in Ha Noi?

C Bob: Good morning, Miss Hien. I’m Bob from England. I’m your new pupil.

D Miss Hien: Hi, Bob. Nice to meet you. Where did you live in England?

E Bob: I live in a beautiful and quiet house near West Lake.

Bob buy three times as many apples as Peter . Mia buys 7 apples more than Bob and 19 apples more than Peter. How many apples do they buy together ?

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