Pastries
Both John and Paul like pastries, but they realize that they haven't got enough money: to buy one pastry, Paul needs more 53 cents and John needs more 48 cents. Even if they put together their money they can't buy one pastry.
With this information you can't know unambiguously the cost of a single pastry, but you can get the maximum cost of a pastry. Write this cost in dollars .
The answer is 1.00.
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let x be the cost of a pastry in dollars.
then, cost of pastry in cents = 100x let y be the money with 1st guy(i forgot his name) in cents and z be the money with 2nd guy. then, by question.... y+53=100x----(i) and z+48=100x----(ii) also by question.... y+z<100x [since they cant buy a single pastry even if they add their money] now adding (i) and (ii), y+z+101=200x thus, y+z=200x-101 then, 200x-101<100x thus, 100x<101 so...x<1.01