25 pencils out of 20 erasers ratio can be written as :
5 : 4.
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5:6
5X + 25 = 20 subtract 25 from each side 5X + 25 - 25 = 20 - 25 5X = - 5 divide both side integers by 5 X = - 1 check 5(-1) + 25 = 20 - 5 + 25 = 20 20 = 20 checks
25 meters because 25/20 = 15/12 which is the tangent ratio.
44:100 or 11:25
0.25 is the ratio of 25 to 100. That's rational.