Question
A can complete a task in 10 days, and B can complete it
in 15 days. After 3 days of working together, B leaves. How many more days will A take to finish the remaining work?Solution
Combined 1-day work of A and B = 1/10 + 1/15 = 1/6 Work done in 3 days = 3 × 1/6 = 1/2 Remaining work = 1/2 A’s 1-day work = 1/10 Days taken by A = (1/2)/(1/10) = 5 days
‘P’ and ‘Q’ invested Rs. 900 and Rs. 750 respectively in a business. After 6 months, ‘P’ increased his investment by Rs. 150 while ‘Q’ d...
What is the area of an equilateral triangle with a side length of 8 cm?
Simplify the expression -:
If the geometric mean of 4, 18, and (p + 4) is 12, what is the value of '0.4p'?
- A sphere has a volume of 11304 cm³. What is its total surface area? (Use π = 22/7)
- If a + b + c = 18, and a ³ + b ³ + c ³ - 3abc = 54, hen find the value of 5(ab + bc + ca).
Suppose a shopkeeper offers a 10% discount on the marked price of an item and still earns a 10% profit. If the discount had not been applied, what would...
The income of person P is 20% higher than that of person Q. If Q spends 82% of his income, which amounts to ₹14,760, determine ...
