Question
P alone can finish a piece of work ‘M’ in 6 days
while Q takes 4 days to finish it alone. P, Q and R working together can finish the work ‘N’ which is 10 times of work ‘M’ in 8 days. How long will R take to finish work ‘N’, when working alone?Solution
 Let the work ‘M’ = 12 units (LCM of 6 and 4) Efficiency of P = 12/6 = 2 units Efficiency of Q = 12/4 = 3 units Efficiency of P, Q and R = (12 × 10)/8 = 15 units per day Efficiency of R = 15 – (2 + 3) = 10 units per day Time taken by R to finish work ‘N’ = 120/10 = 12 days
Which of the following does not form part of excretory system in insects?Â
The Cosmopolite channels are the one which originate outside a particular social system, Examples of this channel includes
e-National Agriculture Market (e-NAM) was launched in the year___Â
The let-down of milk in cow is due to release of which of the following hormone?Â
Truly migratory fish, the migrations of which occur wholly within freshwater is classified as
The Hydrolytic decomposition of protein and release of amines and amino acids is termed as ………………………………
...Which form of DNA helix is predominantly present in cell?
T&V system related to agriculture extension was introduced in the yearÂ
The Green Manure crop that shows stem nodulation isÂ
The branch of Horticulture that deals with the cultivation of vegetables is called
