Efficiency of Ram = 100/50 = 2% Work done by Ram in 20 days = 20/50 × 100 = 40% Remaining work = 60% Efficiency of Lakshman = 60/30 = 2% Therefore, required number of days = 100/((2+2)) = 100/4 = 25 days
In a mixed school 25% of the scholars are infants under 7 and the number of girls above 7 is 4/5 of the number of boys above 7, is 120. Find the number ...
In a colony, there are 100 APL families and 50 BPL families. Each APL and BPL family got blankets equal to 20% and 68%, respectively of total number of ...
The income of 'B' exceeds 'A's income by 15%, and they spend in the ratio of 5:6, respectively. The income of 'A' surpasses 'B's expenditure by Rs. 1,00...
Ravi visits an electronics store with a certain amount of money. He can buy 50 USB drives or 25 headphones with the money he has. However, he decides to...
Akshita and Monika started a business with initial investments of Rs. 2,400 and Rs. 2,500 respectively. After one year, Akshita withdrew ___% and Monika...
The monthly income of a person is Rs.25000 from which he spends 20% on rent, 10% of remaining on food and 20% of remaining on clothing. The remaining a...
In 2011, the total population of a village was 5280, Out of which 30% were female. In 2012, the total population increased by 10% in comparison to the p...
Two numbers are less than a third number by 25% and 31% respectively. Find the percent by which the second number is less than the first.
The marks scored by a boy in three subjects are in the ratio 3 : 4 : 5. Boy scored an overall aggregate of 60% in the exam. If the maximum marks in each...
Ali the barber shaved 38% of his customers and gave a haircut to 76% of his customers. He charged Rs. 12 for a shave and Rs. 9 for a haircut. If 25% of ...
