Start learning 50% faster. Sign in now
In 4 kg of metal Zinc Copper 4 ×1/3 4 ×2/3 4/3 8/3 In 5 kg of metal Zinc Copper 5 ×1/6 5 ×5/6 Now, new ratio = (4/3+ 5/6)/(8/3+ 25/6) = 13:41
The average age of 19 girls is 45 years. If the age of one more girl is added the average decreases by half a year. What is the age of new girl?
A principal of ₹10000 is invested at a compound interest rate of 12% per annum compounded quarterly. What will be the amount after 1/2 year?
What is the single discount percentage equivalent to three consecutive discounts of 10%, 25%, and 18%?