John saved money to have a party if he spends 2/8 of his money on food 1/5 of his money on prizes and 2/10 of his money on decorations estimate what fraction of his money he will have left explain
John would have 13/20 left because 1/5 and 2/10 are the same so it would be 2/5 plus 2/8. 2/8 is equal to 1/4 so you have to add 2/5 plus 1/4 to get to 13/20