Question
Seven years ago from now, the ratio of ages of Om and
Jai was 3:4, respectively. Six years hence from now, the ratio of ages of Veer and Jai will be 4:5, respectively. If Veer is 2 years younger than Om, then find the age of Om, 'a' years hence from now, where 'a' is the smallest two-digit prime number.Solution
Let the ages of Om and Jai 7 years ago be 3x years and 4x years, respectively. Age of Veer 7 years ago = 3x−2 years Age of Om now = 3x+7 Age of Jai now = 4x+7 Six years hence: Age of Om = 3x+7+6=3x+13 Age of Jai = 4x+7+6=4x+13 Age of Veer = 3x+13−2=3x+11 Given: 
Solving the equation: 5×(3x+11)=4×(4x+13) 15x+55=16x+52 16x−15x=55−52 x=3 Since 11 is the smallest two-digit prime number: Age of Om, 11 years hence = 3x+7+11=3×3+7+11=27 years.
Solve the given equation for ?. Find the approximate value.
[(49.88% of 320.11) × (34.85% of 460.24)] ÷ √783.94 = ?
- 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.)
- 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.)
79.99% of (84.89 × 5.99) - (3.89)2 × 21.87 = ?
(29.892 × √290) + 32.98 × 6.91 = ?
44.84% of 799.94 + (625.21 ÷ 24.91) – √(224.77) = ?
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.)...
(20.98 ÷ 2.91) + (15.12 – 5.96) = ?
56.05 2 – 24.24 2 + (63.98) 3/2 – 32.28% of 1500 = ? 2 + 113.03 × 5.09
[54.96 × √99.96 – {(25.02/6.84)% of 280.24}]/(3.032 × 19.87) = ?
