Let the total work = L.C.M of 45 and 35 = 315 units Then, efficiency of ‘A’ alone = 315 ÷ 45 = 7 units/day Combined efficiency of ‘A’ and ‘B’ = 315 ÷ 35 = 9 units/day So, efficiency of ‘B’ = 9 – 7 = 2 units/day So, work done by ‘B’ alone in 63 days = 2 × 63 = 126 units So, percentage of work completed by ‘B’ = (126 ÷ 315) × 100 = 40%
In a conference, 78% people were present, and the no. of absentees was 110. The total number of the people who were invited was
A district has 10,24,000 inhabitants. If the population increases at the rate of 2.5% per annum, find the number of inhabitants at the end of three years
In 2020, Maran earned Rs. 16,500, spending 40% of it and saving the remainder. The following year, his earnings increased by 20%, and his expenditures 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...
Monthly income of P is Rs.15000 and his monthly savings is Rs.9600. If his monthly income is decreased by 35% and monthly expenditure is decreased by 25...
if ratio of present age of Aman to that of Bineet is given as 2:3 and the ratio of present age of Aman to that of Chintu is 13:8.Then, what will be the ...
Two candidates are contesting in an election. All votes are valid votes. A candidate who gets 38% of votes is rejected by 28,800 votes. The total numbe...
Anchal allocates 20% of his monthly salary to transportation, dedicates 50% to shopping, and invests 20% of the remaining balance in food expenses. The ...
Initially, a person spends 80% of his salary and saves the remaining 20%. After receiving a 10% salary increase, his savings remain unchanged, and he sp...
After increase in the price of coffee by 25%, a person is able to buy 4 kg less for Rs. 1,640. Find the original and increased price of the coffee per k...
