Question

4. Andrew likes to solve puzzles.
It took him 4.5 minutes to complete one puzzle with 18 numbers.
It took him 6 minutes and 24 seconds to complete a different puzzle with 32 numbers.
a
For each puzzle work out how many seconds it took Andrew to complete one number.
b
Use your answer to part a to decide which puzzle Andrew completed faster.

Answer 1

Answer:

Step-by-step explanation:

Andrew likes to solve puzzles.

 

       It took him 4.5 minutes to complete one puzzle with 18 numbers.

 

       It took him 6 minutes and 24 seconds to complete a different puzzle with 32 numbers.

 

       

 

a     For each puzzle work out how many seconds it took Andrew to complete one number.

 

b     Use your answer to part a to decide which puzzle Andrew completed faster.