Solve both separately clearly with clear steps.

Abbey and Bobby can deliver flyers working together in 42 minutes.

Working alone Abbey can complete the task 13 faster compared to Bobby working alone.

How long does it take each person to deliver flyers alone? Round final answers to 2dp.

 

Machine C and Machine D fill the same sized containers with sand.

Working together the machines can fill a container in 15 seconds.

Working separately, it takes Machine D ten seconds longer to fill a container as compared to Machine C.

How long does it take each machine to fill a container separately? Round final answers to 2 dp.

Prove the Reverse Triangle Inequality; that is for any vectors and in , 

(hint: consider the cases and separately.) 

Can someone solve this word problem? Until the high Middle Ages, people in Germany only used honey for sweetening. Since the 19th century, beet has been used as a supplier of sugar. 22 percent of the sugar produced worldwide comes from sugar beet. In 2018, sugar beet was grown in Europe on an area of 1, 65 million hectares. A sugar beet has an average sugar content of 17.5% and can weigh up to 1200g. Calculate clearly with an explanation how many tons of sugar were roughly produced in Europe in 2018 if around 6 beets were planted per square meter can be.

How do I solve both of these problems?