Question
The income of P is 3/4th of the income of Q
and income of R is 70% more than the income of Q. Income of Q is Rs.24000 and expenditure of P is 25% of the expenditure of R. If R saves 20% of his income, then find the savings of P.Solution
Income of Q = Rs.24000 Income of P = 3/4 × 24000 = Rs.18000 Income of R = (170/100) × 24000 = Rs.40800 Savings of R = 40800 × (20/100) = Rs.8160 Expenditure of R = 40800 - 8160 = Rs.32640 Expenditure of P = (25/100) × 32640 = Rs.8160 Savings of P = 18000 - 8160 = Rs.9840
Shadow Paging avoids:
Which of the following is not part of the process control block (PCB)?
Which normal form ensures that every determinant is a candidate key?
Which join should be used when you want to list all customers and any orders they may have placed, including customers who haven’t placed any orders?
Which operation is NOT part of relational algebra?
Which normal form ensures no partial dependency of non-prime attributes on a candidate key?
Which type of relationship exists when a record in one table can relate to multiple records in another table, and vice versa?
Which normal form removes partial dependency?
During transaction before commit which of the following statements is done automatically in case of shutdown?
Which of the following concurrency control methods avoids deadlocks entirely but can reduce concurrency by blocking transactions at start?
