Question
The salaries of A and B are in the ratio 5 : 7. They
both get an increment of ₹6000 each, and their new salaries are in the ratio 3 : 4. Find their original salaries.Solution
Let original salaries be 5x and 7x. After increment: A’s new salary = 5x + 6000 B’s new salary = 7x + 6000 Given ratio: (5x + 6000) : (7x + 6000) = 3 : 4 ⇒ (5x + 6000)/(7x + 6000) = 3/4 Cross-multiply: 4(5x + 6000) = 3(7x + 6000) 20x + 24000 = 21x + 18000 24000 − 18000 = 21x − 20x 6000 = x So original salaries: A = 5x = 5 × 6000 = ₹30,000 B = 7x = 7 × 6000 = ₹42,000 Hence, ₹30,000 and ₹42,000 are there original salaries.
What will be the approximate value of the following questions.
81% of 1550 + 27² = ? + 1386 ÷ 22
456 x 99.999 + 654 = ?
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
Find the approximate value of Question mark(?). No need to find the exact value.
71.92 ÷ 8.02 × 6 + 44.95% of 499.79 – √(80.91) – 10.03...
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
(627.98 ÷ 3.98 + 11.01 X 12.98 - ?) ÷ √623 = (178.98 + 37.08) ÷ 23.98
√2023.85 + (24.77% of 1999.73) - (3/8 of 799.91) = ?
Find the approximate value of Question mark(?). No need to find the exact value.
(519.79 ÷ 10.03) × (47.98 ÷ 6) + √(63.94) × 4.04 = ?
...What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
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