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 The Broken Cash Register (Posted on 2013-08-30)
I bought 4 items at a store having a broken cash register. The clerk used a calculator to add them up, but hit the multiplication key instead of the addition key and told me the result was \$7.02. When I pointed out the error, he added them up and reported the same final bill! Is this possible, or was another error made?

 No Solution Yet Submitted by Danish Ahmed Khan No Rating

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 computer solution Comment 1 of 1

DEFDBL A-Z
tot = 702
FOR a = 1 TO tot / 4
FOR b = a TO (tot - a) / 3
ab = a * b
FOR c = b TO (tot - a - b) / 2
d = tot - a - b - c
abcd = ab * c * d
IF abcd = 702000000 THEN PRINT a; b; c; d
NEXT
NEXT
NEXT

produces

117  125  160  300

or, with the appropriate decimal points

1.17  1.25  1.60  3.00

 Posted by Charlie on 2013-08-30 17:29:10

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