We can use the division method to solve this question. To get a decimal, simply divide the numerator 64 by the denominator 40: 64 (numerator) ÷ 40 (denominator) = 1.6. As a result, you get 1.6 as your answer when you convert 1 24/40 (or 64/40) to a decimal.
For display purposes, 1/24th and 1/25th scale are close enough for horseshoes, as they say. The difference in size is about 4 percent. You won't be able to swap engine or chassis parts between the two scales, though -- one won't fit with the other. Thanks, scotpens.
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