Question
A, B and C alone can complete a work in 30, 60 and 45
days respectively. All of them started working together but after 3 days from start A left the job and after 7 more days B also left the job. So for how many days did C work?Solution
Let the total work = 180 units (LCM of 30, 60 and 45) Amount of work done by A alone in one day = 180/30 = 6 units Amount of work done by B alone in one day = 180/60 = 3 units Amount of work done by C alone in one day = 180/45 = 4 units Amount of work done by A, B and C together in 3 days = 3 × (6 + 3 + 4) = 39 units Amount of work done by B and C together in 7 days = 7 × (3 + 4) = 49 units Remaining work = 180 – 39 – 49 = 92 units So, the time taken by C alone to complete 92 units work = 92/4 = 23 days So, C worked for 23 + 3 + 7 = 33 days
The MRP of an article is Rs.1750 and the cost price of the article is 40% of its marked price. If x% of the discount offered on the marked price of the ...
A total of 444 chocolates are distributed among P, Q, and R in the ratio 3:5:4. If the distribution were instead done in the rati...
A and B partnered to start a business with initial investments of Rs. 1,200 and Rs. 1,500, respectively. After one year, they both reinvested additional...
In the each question, the given two series following the same pattern, then find the pattern used in the 1st series and use the pattern to find the unk...
A complex number z lies on or within a circle centered at (2, 0) with radius 5 units. What is the maximum value of |z – 2|?
2, 5, 16, 65, ?, 1957
Let vector r lie in the plane of p = i + j and q = j + k, and be such that r is perpendicular to p and satisfies r · q = 2. Then, the value of the dot ...
In a 1500-metre race, Arjun beats Bishnu by 600 metres, and Bishnu beats Chintu by 700 metres. How far will Arjun beat Chintu by ...
A vehicle travels 100 km at a speed of 50 km/h and 200 km at a speed of 75 km/h. What is the average speed for the entire trip?
Relevant for Exams:
