Let the efficiency of woman and that of a girl be 'X' units/day and 'Y' units/day respectively. Time taken by 2 women and 5 girls together to complete the entire work = 9 × 2 = 18 days Then, total work = (3X + Y) × 25 = (2X + 5Y) × 18 Or, 75X + 25Y = 36X + 90Y Or, 39X = 65Y So, X:Y = 65:39 = 5:3 Let 'X' = '5a' and 'Y' = '3a' Then, total work = (5a × 3 + 3a) × 25 = '450a' units 40% of the total work = 450a × 0.4 = '180a' units Time taken by 1 woman and 1 girl together to complete 40% of the work = 180a ÷ (5a + 3a) = (180a/8a) = 22.5 days
Representatives of the Maratha Empire and the British East India Company signed the 'Treaty of Salbai' in which year?
The Civil Aviation Minister Jyotiraditya Scindia announced to increase the building of new 220 airports by the year_______.
Ashtadhyayi, is a Sanskrit treatise on grammar, written in the 6th to 5th century BCE by _________.
As on 14 July 2020, who among the following became the sixth richest man in the worldafter surpassing Alphabet Co- founder Larry Page, according to da...
Which is the first state in the country to set up a greenfield grain-based ethanol production plant?
In June 2019, The Indian Air Force has signed a deal with the Israeli government to buy as many as 100 SPICE bombs worth:
Who conducted X-ray spectroscopic study of a large number of elements and showed that the frequency of X-rays emitted by an element is related to the a...
Who is the author of the book “Our India: Reflections on a Nation Betwixt and Between”?
In November 2020, ___________ has set a record of becoming the world’s fastest piano player ever.
Which of the following options is INCORRECTLY paired?
