Start learning 50% faster. Sign in now
Get Started with ixamBee
Start learning 50% faster. Sign in nowWhether A starts or B starts, Work in 2 days by them will be same. So, work done in 18 days (9×2) will be also same in both cases. Now work done after 18 days will also be same, When A starts the work, after 18 days, A worked for last one day (19th day). When B starts the work, after 18 days, B worked for 19th day and A worked for 5/9th day in the end. So, A × 1 = B × 1 + A × (5/9) A – A × (5/9) = B 4A/9 = B A: B = 9: 4 So let A can do 9 units per day and B can do 4 units per day. So total work when A starts, => (A+B)’s alternate work in 18 days + A’s work in 19th day => (A+B)’s 2 days alternate work × 9 + 9 units => 13 units × 9 + 9 units = 126 units Now C can do this job in 126 days. So, C’s 1 day work = 126/126 = 1 units Hence A, B & C together can do this job in, => 126/(A+B+C) = 126/ (9+4+1) = 126/14 = 9 days
The probability of selecting a rotten apple randomly from a heap of 900 apples is 0.18. What is the number of rotten apples in the heap?
...34 pens are there in a box where 10 are red pens, ‘p’ are blue pens and remaining are black pens. If a pen is picked, the probability of getting blu...
One bag contains 5 yellow hats and 4pink hats. Another bag contains 3 yellow hats and 7pink hats. If one hat is drawn from each bag, what is the probabi...
Two Dice are thrown simultaneously. Find the probability that the number on the first dice is more than the number of 2nd Dice.
A box contains only three colors of balls- red, green and blue. What is the minimum number of balls that should be picked from the box to ensure that at...
A bag contains 9 blue balls, 16 red balls, and 20 green balls. One ball is drawn at random. Find the probability that the ball drawn is either blue or g...
Three cards are drawn one after another with replacements from a standard deck of 52 cards. What is the probability of getting the first card a Queen, t...
Tokens numbered 1 to 350 are in a bag. What is the probability that the Token drawn has a number which is a multiple of 6 or 7?
Two schools, A and B participate in a Quiz competition. The probability of A’s winning is 3/7 and the probability of B’s winning is 3/5. Wha...