Question
A person initially spends 50% of his salary and saves
the rest. After his salary increases by 30%, he continues to save the same amount but now spends Rs. 9,000 more. Calculate his initial salary.Solution
ATQ,  Let, the initial salary of the person be Rs. '100x'.  Initial expenditure of the person = 0.50 X 100x = Rs. '50x'  Initial savings of the person = 100x - 50x = Rs. '50x'  New salary of the person = 1.30 X 100x = Rs. '130x'  Savings of the person remains the same.  So, 50x + 9000 = 130x - 50x  Or, 80x - 50x = 9000  Or, 30x = 9000  So, x = 300  So, the initial salary of the person = 100x = 100 X 300 = Rs.30,000
HTTPS ensures which of the following?
Wait-Die and Wound-Wait are strategies for:
What will re.findall(r'\d+', 'abc123def45ghi') return?Â
During transaction before commit which of the following statements is done automatically in case of shutdown?
Which type of join returns all rows from the left table and matching rows from the right table?
What is a page fault?
What will be the value of `x` after the following pseudo-code execution?Â
```
  x = 0
  data = [10, 20, 30]
  f...
In a relational database, what is a candidate key?
In the context of computer networks, what is the primary function of a router?
A transaction that reads a value then later sees a different value because another transaction updated and committed in between experiences which anomaly?
Relevant for Exams:
