Lilah had 2 2/35 litres of paint. She used 3/7 litres of the paint on her bedroom walls and 1 2/5 litres of the paint on her kitchen walls.
How much paint, in litres, does she have left?
Give your answer as a fraction in its simplest form. pls help thanks

Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?