Can someone please help with these questions , I cannot work them out - any help much appreciated:
1. It takes 2 decorators 8 days to paint a house. On is lazy, the other is energetic. The energetic one could paint the house in 12 days on his own. How many days would it take the lazy one to paint the house on his own?
2.A number of children are standing in a circle. They are evenly spaced and the 7th child is directly opposite the 18th child. How many children are there altogether?
Thank you ...these are from a St Pauls sample paper.
1. decorator 1 does 1/12 of a house each day - so in 8 days he will do 2/3 of the house, so deco 2 does 1/3 in 8 days hence will take 24 days to do the whole lot
2 Not so sure abou this one but between 7 and 18 there are 10 numbers so there will be ten kids each side of the semicircle + child 7 and child 18 = total of 22?