Let the cost price of each pen be Rs.x So, cost price of 13 pens = Rs.13x According to the question, => (13x – x + 60)/13 = x – 3 => 12x + 60 = 13x – 39 => x = 99 Therefore, the cost price of the pen that was replaced is = Rs.99
50 men can complete a piece of work in 15 days. 10 men started the same work and worked for 10 days, and then joined by ‘x’ more men such that the r...
In a retreat, there is sufficient food for 300 people for the duration of the retreat. After 8 days, 100 people leave the retreat. Then, after another 3...
‘A’ alone can complete a work in 12 days. ‘B’ alone can complete the same work in 20 days. If ‘A’ and ‘B’ work together for 6 days, then...
Fifteen workers need 20 days to produce 2000 centre fresh. Now, if the goal is to manufacture 4000 center fresh within 25 days, how many workers are nee...
A and B together can complete a piece of work in 48 days while B and C together can complete the same work in 58 days. All of three together can complet...
The time taken by ‘A’ to build a wall alone is 50% more than the time taken by him to build it along with ‘B’. ‘B’ will take how much percen...
A’ and ‘B’ together can complete a work in 10 days while ‘A’ takes 30 days to complete the same work alone. If ‘C’ is 50% more efficient t...
Chinu takes 20 days more and Diksha takes 6 days more than the number of days taken by both of them working together to complete ...
A can do a work in 12 days and B in 16 days. If they work on it together for 3 days then in how many days the remaining work will be completed by B?
A, B and C can do a piece of work in 5, 8 and 10 days respectively. They start working together but C leaves after working 1 days and B, 2 days before t...
