Question
A man sells an article at a certain price incurring 20%
loss. If he had sold the same article for Rs. 20 more he would have earned 20% profit. What was the cost price of the said article?Solution
ATQ, Let the cost price of article be 100x When sold at loss SP = 100x - (20/100) × 100x = 80x When sold at profit SP = 100x + (20/100) × 100x = 120x According to the question, 120x - 80x = 20 ⇒ 40x = 20 ⇒ x = 0.5 ⇒ 100x = 50 ∴ Cost price of article is Rs. 50
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-...
‘A’ is 80% more efficient than ‘B’. ‘A’ and ‘B’ work together for 5 days after which ‘A’ is replaced by ‘C’. ‘B’ and ‘C�...
Shivam and Harish can do a job alone in 90 days and 120 days respectively. Both work together and earn Rs. 5,250. Find Shivam’s 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...
‘A’ and ‘B’ can do a piece of work in 15 days and 20 days, respectively. They started working together but ‘A’ 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:
