Mr Robins spent 1/4 of his money on 4 similar keychains and 8 similar plushies from a souvenir shop. The cost of each plushie is twice the cost of each keychain. He bought some more plushies with 1/2 of his remaining money. How many plushies did Mr Robins buy altogether?
there are 35 competitors in a marathon. Sixty of these finished the race in under four hours. How many competitors finished the race in under four hours?
B and Y had 270 tokens altogether. Y had 30 tokens fewer than B. Y used 1/4 of her tokens at arcade. How many tokens did Y have left?
