Chen, Malachi, and Rory ordered a giant pizza.

Chen ate \(1 \over 3\), Malachi ate \(1 \over 4\), and Rory ate \(1 \over 5\) of the pizza.

 

Altogether, what fraction of the pizza did they eat? __________

 

 

b)

In a relay, Toby ran 2\(1 \over 2\) laps, Celia ran 3\(1 \over 3\) laps, and Danica ran 4\(1 \over 4\) laps.

 

Altogether, how many laps, including part laps, did they run? __________

 

 

c)

A pet shop has puppies with different-coloured coats.

\(1 \over 4\) are pure white, \(1 \over 5\) are pure black, and \(2 \over 5\) are both black and white.

The remaining puppies have no black or white colouring. 

What fraction of the puppies ...

 

i)

 

ii)

 

iii)

are pure black or pure white in colouring? __________

 

have at least some white colouring? __________

 

have no black or white colouring? __________