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Total work = Number of days×1 day’s work (efficiency) Total work = LCM (8, 24) = 24 unit 1 day’s work of (A+B) = 24/8 = 3 unit 1 day’s work of A = 24/24 = 1 unit 1 day’s work of B = 3 - 1 = 2 unit Now, Time taken by B to completed the work = 24/2 = 12 days
In a school there are 60% boys and rest are girls. If number of girls is 360 then find the total number of boys in the school.
If 75% of a number is added to 75, the result is the number itself, then the number is:
Arun saves 30% of his salary while Gagan saves 32%. If both get the same salary and Gagan saves Rs. 1600, find the savings of Arun?