Q13 of 62 Page 121

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.

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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