Question
A buffalo alone can plough field ‘A’ in 20 days. A
Bull alone can plough the field ‘A’ in 32 days. Find the number of days taken by 2 bulls and 2 buffalo to together plough field ‘B’ that is 30% larger than field ‘A’?Solution
Let the total work done to plough field ‘A’ = 160 units (LCM of 20 and 32) Then, efficiency of a buffalo = (160/20) = 8 units/day Efficiency of a bull = (160/32) = 5 units/day Total work required to plough field ‘B’ = 160 × 1.30 = 208 units Combined efficiency of 2 bulls and 2 buffalo = 2 × 5 + 2 × 8 = 26 units So, number of days required to plough field ‘B’ = 208/26 = 8 days
Five friends K, B, I, H and E are sitting in a straight line all facing in the north direction. K is sitting at one of the extreme ends. Three people ar...
- Simplify:- 100 ÷10-[-2+{-9+(3-6 of 2)}]=.
What should come in place of the question mark (?) in the following series based on the above arrangement?
Z A 9 4 Δ ...
Each consonant of the word ‘ ALCHEMY ’ is changed to the next letter in the English alphabetical series. Each vowel is changed to the previous lette...
- The product of two numbers is 15.75. If one of the numbers is 4.5, then find the other number.
Select the odd group of numbers. (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digi...
Which of the following file extension denotes Excel Spreadsheet?
When entering text within a document, the Enter key normally pressed at the end of every
The perimeters of the two squares differ by 60 cm. If the side of one square is four times the side of the other square, then find the area of the large...
In a certain code language, ‘201511920’ is related to 'TOAST' in the same way ‘321181851420’ is related to which of the following words?
...
