Numbers of pens = Numbers of defective pens + Numbers of good pens ∴ Total number of pens = 136 + 22 = 158 pens P(E) = (Number of favourable outcomes) / (Total number of outcomes) P(picking a good pen) = 136/158 = 0.860
A and B together can do a work in 12 days. If A can alone do the same work in 18 days, then in how many days B alone will do the same work?
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...
X men can complete the piece of work in 35 days and (X + 34) men can complete the same work in 14 days less than that of days taken by X men. Find the v...
'A' and 'B' can together complete a job in 15 days. If 'B' alone can finish 50% of the job in 20 days, how long would it take 'A' alone to complete the ...
A can complete a piece of work in 10 days. B in 15 days and C in 20 days. A and C worked together for two days and then A was replaced by B. In how many...
Pipe ‘A’ and pipe ‘B’ can fill a cistern in 20 minutes and 15 minutes respectively. Pipe ‘C’ alone can empty the cistern in 10 minutes. If a...
"'Mahesh' is 40% less efficient than 'Neeraj.' 'Neeraj' takes 30 days fewer than 'Mahesh' to finish the same work. Find the time taken by 'Neeraj' to fi...
A and B together can complete a piece of work in 32 days while A alone can complete 40% of the work in 32 days. Find the time taken by B to compl...
Consider that 'A' and 'B' were collectively paid Rs. 9,000 for a job. Out of this amount, 'B' received Rs. 3,000. If 'B' can finish this task solo in 48...
47 masons can dig a 35 m long trench in one day. How many masons should be employed for digging a 105 m-long trench of the same type in one day?
