Question
Quantity 1 : A train travels from Station A to Station
B, a distance of 360 km. For the first 180 km, it travels at a speed of 60 km/h, and for the remaining distance, it travels at a speed of 90 km/h. What is the total time taken by the train to travel from Station A to Station B? Quantity 2 : Another train travels from Station C to Station D, a distance of 450 km. For the first 225 km, it travels at a speed of 50 km/h, and for the remaining distance, it travels at a speed of 75 km/h. What is the total time taken by the train to travel from Station C to Station D?Solution
For Quantity 1 : Time taken for the first 180 km = 180 ÷ 60 = 3 hours Time taken for the remaining 180 km = 180 ÷ 90 = 2 hours Total time = 3 + 2 = 5 hours Quantity 1 = 5 hours For Quantity 2 : Time taken for the first 225 km = 225 ÷ 50 = 4.5 hours Time taken for the remaining 225 km = 225 ÷ 75 = 3 hours Total time = 4.5 + 3 = 7.5 hours Quantity 2 = 7.5 hours Correct option : b) Quantity 1 < Quantity 2
Simplify the following expressions and choose the correct option.
{[(13)² − (7)²] ÷ 12} × 4 = ?
(25)² × 4 ÷ 5 + (3)³ + 48=? + 425
?2 + 114 - 48 ÷ 2 × 5 = 163
182 + 10 × 12 - ? = 312
2/5 of 3/4 of 7/9 of 7200 = ?
If (3 × 144 – 252 ÷ 14) ÷ 18 = √1024 – x, then find the value of ‘x’.
12.50% of 1440 - 17 × 51 + 721 =?
[(15)³ × (8)²] ÷ (90 × 6) = ?²
?2 - (40% of 240) = 25 X 5
Simplify: 48 ÷ 4 × 3 + 5 × (6 − 2)