Question
If the cost of 4 pens and 6 notebooks is ₹ 600, then
find the cost of 6 pens and 9 notebooks.Solution
4pen +6notebook =600 2(2pen+3notebook) =600 (2pen+3notebook) =300 … (1) Then Equation (1) multiply by 3. 6pen+9notebook=900. =900Rs
'X' and 'Y' together can complete the work in 16 days. 'Y' alone can complete the work in 24 days. If Z is 50% more efficient than X, find the time tak...
6 men and 10 boys can finish a task in 18 days. If each boy is between 1/3rd to equal the efficiency of a man, find the maximum and minimum number of da...
- If Ankit takes four times the time that Ravi takes or five times the time that Sandeep takes to finish a task, and all three working together can complete ...
'A' alone can do some work in 18 days. 'B' is 20% more efficient than 'A'. 'A' worked alone for 12 days and left. How much time (in days) does 'B' need ...
P and Q individually can complete the work in 22 days and 33 days respectively. If the time taken by R alone to complete the work is 1.25 times the time...
Ajay started a work and left working after 8 days. Vijay finished the remaining work in next 36 days. Had Ajay left the work after working for 12 days t...
Two people, A and B, working separately can sanitize a building in 6 and 10 hours, respectively. They work in stretches of one hour alternately. If A be...
The efficiency of A, B, C, D are in the ratio of 6 : 5 : 4 : 3. If A and C can do a work together in 6 days. Then How much days B and D will take to com...
Anil can do a piece of work in 25 days. He alone worked at it for 10 days and then Sunil completed alone the rest work in 15 days. In how many days, the...
A builder recruited 60 workers to do a task in 90 days. It was discovered that only 1/3 of the task was achieved after 60 days. Determine how many addit...
Relevant for Exams:
