Question
The station master decides that the length of the
rectangular digital board be increased by 5% and the width be reduced to 7%. Find out the total change in the area.Solution
Let length and breadth of the rectangle be x and y respectively. As we know, Area of the rectangle = xy New length of the rectangle = x × 105/100 = 1.05x New breadth of the rectangle = y × 93/100 = 0.93 New area of the rectangle = 1.05x × 0.93y = 0.9765xy Area decreased by (in %) = [(xy-0.9765xy) /xy] x 100 = 2.35%
Monthly income of A is Rs. 66000 out of which he spent 18%, 11% and 21% of his total income in rent, medicine and transportation, respectively. Find his...
5555.05 + 500.05 + 5000.005 + 5.005 =?
? = 65.78² ÷ (5.01⁵ + 7.02 × 33.33) + 33.33% of (290.88 × 23.09)
(84.92 + 235.17) ÷ (15.93 × 3.89) = ? ÷ 21.02
(1560.23 ÷ 25.98) + (768.32 ÷ 23.9) + 1814.11 = ?
- 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.)
30.05% of 360.05 – 25.15% of 99.99 × 3.02 = ?
Train 'P' travels at a speed of 45 km/h and crosses train 'Q' in 15 seconds while moving in opposite directions. Determine the speed of train 'Q' if the...
( 1000)1/3 × 10.11 × 4.97 ÷ 10.32 =? – 15.022
?3 - (77.98 ÷ 6.09 + 10.12)2 + (2.015 - 11.983)2 = 20.01 × (215.98(2/3) - √36.03)
