Let the total work done to plough field ‘A’ = 180 units (LCM of 30 and 36) Then, efficiency of a buffalo = (180/30) = 6 units/day Efficiency of a bull = (180/36) = 5 units/day Total work required to plough field ‘B’ = 180 × 1.20 = 216 units Combined efficiency of 2 bulls and 1 buffalo = 5 × 2 + 6 × 1 = 16 units So, number of days required to plough field ‘B’ = 216/16 = 13.5 days
Rahul saves Rs. 7200 more if he spends 65% of his income instead of 85%. Find the savings of Sumit whose income is 25% more than that of Rahul, and spen...
In an office with 400 employees (comprising both men and women), preferences for either 'Tea' or 'Coffee' exist. The number of men who like 'Tea' to tho...
The current population of a city is 50,000. If the population of males increases by 4% and the population of females increases by 6%, the total populati...
A candidate who gets 22% marks fails by 10 marks but another candidate who gets 40% marks gets 14% more than the passing marks. Find the maximum marks.
A village lost 20% of its cattle in a flood, 20% of remaining died due to diseases and 20% of the rest were disabled. If the number left now is 9600. Wh...
Rajesh spent 49% of his monthly income on food and 51% of the remaining of study. If total monthly savings (after spending on food and study) of Rajesh ...
Bella scored 20% marks in a test and failed by 75 marks, whereas Tara scored 40% marks in the same test and failed by 25 marks. Find the passing marks o...
In a job fair, 50% of the people are graduates, one fifth of them are post graduates and rest are double graduates. If three-fourth of the graduates, 60...
Rakesh obtained 25% more marks than Ambuj and Suresh obtained 40% less marks than Rakesh. Marks obtained by Suresh are what percent less than marks o...
Out of 600 students in school, 40% students like samosa only and 30% students like samosa and momos both. If 22% students don’t like any snacks then f...
