Examination 7504

7. Class B is having a preventive dental check-up. Two dental caries were found in a quarter of the pupils and one caries in an eighth. Half of the class had all their teeth healthy. How many pupils go to 7th B if three pupils are absent on the day of the dental examination?

Correct answer:

n =  24

Step-by-step explanation:

n/4 + n/8 + n/2 + 3 = n

n = 24

n = 24/1 = 24

n = 24

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