Solving problems involving various units of measure

Maths

It takes me 50 minutes to complete an 8 km walk. In theory, how long would it take me to complete a 16 km walk?

If it takes a nail around 3 mm to grow in 1 month, then how long does a nail grow in 1 year?

If an athlete can run 5 miles in approximately 20 minutes, then how long will it take them to run 32 km?

A hairdresser uses approx. 120 g of hair dye for every 20 cm of hair. If my hair is 50 cm long then how much hair dyes will she need to use?

My friend completes a 120 mile charity walk in 20 days. In 10 days, what is this the equivalent to?

Which of the below is approximately equivalent to 200 kg?

Person A lifts 440 pounds and person B lifts 215 kilograms. How much more does person B lift than person A?

At the gym Anthony lifts 8 kg and Declan lifts 12 kg, what is the total amount they both lift in pounds?

A family carry four suitcases with the following weights: 20 kg, 33 lb, 22 kg, 30.8 lb. What is the total weight of all 4 suitcases?

What is the answer to the following calculation?         50 kg x 2 + 110 lb