Question
David alone can complete a work in 15 days and Rizwan
alone can do the same work in 30 days. David starts the work alone and on every alternate day, Rizwan joins him. In how many days will the work be completed?Solution
Given: David finishes work in 15 days → 1-day work = 1/15 Rizwan finishes in 30 days → 1-day work = 1/30 Work pattern: Day 1: David Day 2: David + Rizwan Repeats every 2 days 2-day work: Day 1: 1/15 Day 2: 1/15 + 1/30 = 1/10 Total in 2 days = 1/15 + 1/10 = (2 + 3)/30 = 5/30 = 1/6 So, every 2 days → 1/6 of work is done In 12 days: (12 ÷ 2) × 1/6 = 6 × 1/6 = 1 (full work) Therefore, 12 days is the answer
- Identify the INCORRECTLY spelt word in the following sentence and select its correct spelling from the given options.
The committee appreciated her... 1) Decietful
2) Desolate
3) Ingridient
4) Poisonus
In FY24, municipal corporations in India are istimated to generate 50% of their revenue from their own taxes, fees, and user charges.Â
...Meteorologists had previously forecast a historic hurricane season for 2024 based on the expectation that a strong La Niña would emerge this winter. <...
The Parliamentary Standing Committee on Finance, headed by Congress MP Veerappa Moily, was on Tuesday breifed on the impact of demonetisation by the Min...
In the question below, a sentence is given, four words have been highlighted in bold. Find out if the words are appropriate (grammatically and contextu...
- Choose the word that is misspelled:
Choose the correct spelling of the words below.
Choose the correctly spelt word.
1) depraive
2) deprave
3) deprayve
4) deprawve
5) none of these
Relevant for Exams:
