A school nurse measures the weights of students (in kilos) in an annual check-up. These are the results: 55 67 43 47 62 64 43 42 45 46 45 44 65 47 48 48 46 61 40 47 49 48 60 46 47 50 45 58 45 45

Certainfraction,its value increased3. when three is added to both the numerator and denomenator of avalde decreased by 9/40. however, when 3 u subtracted by bothby 9/10. find the denominator of original traction.​