Question
A can complete a work in 30 days, B in 24 days, and C in
20 days. A, B, and C work together for 5 days, after which B and C leave. How many more days will A take to complete the remaining work?Solution
Work done by A, B, and C together in 1 day = (1/30) + (1/24) + (1/20). LCM of 30, 24, and 20 is 120. Work done by A, B, and C in 1 day = (4 + 5 + 6)/120 = 15/120 = 1/8 of the total work. In 5 days, they complete 5/8 of the work. Remaining work = 1 − 5/8 = 3/8. A's rate of work = 1/30. Time taken by A to complete the remaining 3/8 of the work = (3/8) × 30 = 11.25 days. Ans. a
The headquarter of Insurance Regulatory and Development Authority of India (IARDA) is located at
National Rural Development Institute is situated in which city?
In how many cities did Maharaja Jai Singh II build Jantar Mantar?
Which hill station in India is known as the ‘Queen of the Mountains’?
रॉक फास्फेट की खान कहाँ पर स्थित है ?
In which of the following districts of Uttar Pradesh, Kalinjar Fort is located?
What is the capital of the state Punjab?
Massive search operation ‘CASO’ was recently launched in Jammu & Kashmir. Expand ‘CASO’
The Nobel Peace Prize 2017 was won by
Which of the following international scientific organisations approves the names of elements, symbols and unit?
