Question
'R' takes 20 days to complete a task, and 'A' takes 30
days to do the same task. To finish the job in just 6 days, what percentage increase in their respective efficiencies is required by 'R' and 'A'?Solution
We can say that Let the total work = 60 units (L.C.M of 20 & 30) Efficiency of 'R' = 60/20 = 3 units /day Efficiency of 'A' = 60/30 = 2 units/day Their combined efficiency = 2 + 3 = 5 units/day To complete the work in 6 days, there combined efficiency should be 60/6 = 10 units/day Required percentage increase = {(10 – 5) × 100}/5 = 100%
Students passed in English is what percent less/more than the students passed in accounts?
The minimum number of female players enrolled for which game?
If the incomes of BCCI and Cricket Australia are in the ratio 5 : 8 and the income of Cricket Australia is 120% of its expenditure, then what is the dif...
If in 2018, the population of Dehradun is increased by 20% and the population of Chennai is reduced by 10% from 2016 and the population of Chennai in 2...
What is the difference between the expenditure on players by BCCI and that of Cricket Australia?
If the number of students passed in Business is increased by 30 and the number of students passed in Accounts is decreased by 30, then the number of stu...
In 2017, the population of Delhi as well as Bangalore is increased by 20% from the year 2016. If the population of Delhi in 2016 was 13000 and the perce...
If the percentage of Mathematics students passed in exam is increased by 50% and percentage of students passed in accounts is decreased by 40%, then wha...
In how many years is the income from Domestic flights less than the average income the Domestic flights in all the given years together?
The expenditure on Ground Maintenance by Cricket Australia is what per cent more than that on the same by BCCI?