Let's see how much he ate in total. He ate 1/6 on the way to the bus, for a total of 1/6 so far. He ate 2/6 in the cinema for a total of 3/6 so far. He ate another 2/6 on the way home for a total of 5/6 of his sweets. This is how much he ate. To find out how much sweets he has left, do 1 - 5/6 to get your answer of... 1/6
+70 
