Question
If present age of βAβ is twice the age of βBβ,
6 years ago from now and sum of their ages 7 years hence from now will be 50 years, then find the present age of βBβ.Solution
Let present age of βBβ = βxβ years So, present age of βAβ = 2 Γ (x β 6) years ATQ, (x + 7) + {2(x β 6) + 7} = 50 Or, 3x + 2 = 50 Or, 3x = 48 Or, x = 16 So, present age of βBβ = 16 years
Simplify the following expressions and choose the correct option.
{[(13)Β² β (7)Β²] Γ· 12} Γ 4 = ?
(25)Β² Γ 4 Γ· 5 + (3)Β³ + 48=? + 425
?2 + 114 - 48 Γ· 2 Γ 5 = 163
182 + 10 Γ 12 - ? = 312
2/5 of 3/4 of 7/9 of 7200 = ?
If (3 Γ 144 β 252 Γ· 14) Γ· 18 = β1024 β x, then find the value of βxβ.
12.50% of 1440 - 17 × 51 + 721 =?
[(15)³ × (8)²] ÷ (90 × 6) = ?²
?2 - (40% of 240) = 25 X 5
Simplify: 48 Γ· 4 Γ 3 + 5 Γ (6 β 2)