Question
Train 'X' departed from Chennai to Hyderabad at 7:00 a.m.
Train 'Y' left Hyderabad for Chennai at 9:00 a.m., traveling at 65 km/h. They crossed each other at 4:00 p.m. If the total distance between Chennai and Hyderabad is 760 km, find the speed of train 'X'.Solution
ATQ,
Let the speed of train 'X' be 'x' km/h
Distance covered by train 'X' in first 2 hours = 2 × x = 2x km
Time both trains travelled together = 7 hours (from 9:00 a.m. to 4:00 p.m.)
ATQ;
7 × (65 + x) = 760 - 2x
Or, 455 + 7x = 760 - 2x
Or, 305 = 9x
So, x = 33.88
So, speed of train 'X' = 33.88 km/h
5 × 14 + 100 ÷ 4 = 62 + ?
{(81% of 800 + 28 × 4) – 27 × ?} = 11 × 20
√1369 + √1024 + √841 =(?)2 − 46Â
180 ÷ 3 of 2 = 102 – ?
(24% of 500 - 20) ÷ 25 = ? ÷ 4
1024 ÷ 32 = 2(1/2)×?
3% of 3000 × ?% of 2000 = 3600
82.3 × 644.7 × 723.4 × 815.85 = 72?
?% of 500 = 674 - 18% of 800
30% of 750 + ?% of 400 = 25% of 1016 + 3