Question
A train was initially moving at 60 km/hr, then increased
its speed by 15 km/hr after βzβ hours and continued for (z + 8) hours more. If the distance covered in the last (z + 8) hours is 900 km, find the distance covered in the first βzβ hours.Solution
ATQ, (60 + 15) Γ (z + 8) = 900 Or, 75 Γ (z + 8) = 900 Or, z + 8 = 12 Or, z = 4 Therefore, required distance traveled = 60 Γ 4 = 240 km
[{70 + (40 - 22) Γ· 3} Γ· 4] = ?
? % of 1200 = 20% of 30% of 3600
β (96 + 1000 + 3000) = ?
Solve the following:
1500 Γ· (9 Γ 18 Γ· 6 Γ 3 β 45) Β²
(7/5) × (3/4) × (5/9) × (6/7) × 3112 = ?
What will come in the place of question mark (?) in the given expression?
(125 Γ 64) Γ· (8 Γ 5) + (12.5)Β² β (144 Γ· 3) = ?
...?2 - (40% of 240) = 25 X 5
5.5 × 3.2 × 2.3 = ?
- Find the simplified value of the given expression.
(-8) x {15 - (-4) x (-5)}