Question
A number is first increased by 80%, then increased by 50%
and then decreased by 50%. If the resultant number is 360, then find the original number.Solution
ATQ,
Let the original number be '100x'.
ATQ;
100x Γ 1.8 Γ 1.5 Γ 0.5 = 360
Or, 135x = 360
So, x = 2.67
So, original number = 2.67 Γ 100 = 267
A and B together can do a work in 5 days. If A can alone do the same work in 15 days, then in how many days B alone will do the same work?
A and B can complete a job together in 30 days; B and C can complete the same job together in 25 days, while C and A can complete the same job together ...
Sufficient food-supply was arranged to last for 30 days for 250 soldiers. If 50 soldiers did not attend the camp, for how many extra days will the food-...
βAβ is 80% more efficient than βBβ. βAβ and βBβ work together for 5 days after which βAβ is replaced by βCβ. βBβ and βCοΏ½...
Shivam and Harish can do a job alone in 90 days and 120 days respectively. Both work together and earn Rs. 5,250. Find Shivamβs earnings.
Suppose Y individuals can complete a task in (Y - 28) days, and (Y + 12) individuals can finish the same task in (Y - 32) days, what is the number of da...
- 40 women working 10 hours a day take 12 days to complete a project. How many women working for 7 hours a day are needed to complete twice the given project...
βAβ and βBβ can do a piece of work in 15 days and 20 days, respectively. They started working together but βAβ left after 3 days. Find the t...
3 men, 4 women and 5 boys can do a piece of work in 15 days, 20 days and 25 days respectively. For first 3 days 3 men and 2 women work together and for ...
Ravi and Rekha, alone can complete a work in 25 days and 50 days, respectively. They started the work together and left after 10 days such that the rem...
Relevant for Exams:
