Hannah thinks of a number. "If I double my number and add 5 the answer is 23"  Hayden thinks of a number. "If I multiply my number by 5 and add 4 the answer is 19"  
Hunter thinks of a number. "If I add 5 to my number then divide the result by 2, the answer is 4.5"  Ian thinks of a number. "If I multiply my number by 3 and subtract 4 then multiply the result by 5, the answer is 3 less than 253" 
What numbers are they thinking about?
Topics: Starter  Algebra  Functions  Puzzles
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