1.

Sonal attended her school on 204 days in a full year. If her attendance is 85%, find the number of days on which the school was opened.

Answer»

Let the number of days the school was opened = Z 

∴ Percentage of attendance = 85% of Z 

Now, 

85% of Z = 204 

⇒ 85/100 × Z = 204 

⇒ Z = 204 × 100/85 

⇒ Z = 204 × 20/17 [Divided by 5] 

⇒ Z = 12 × 20 

⇒ Z = 240



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