Two cars X and Y start at the same point and travel towar...
Two cars X and Y start at the same point and travel towards a point P which is 150km away. If the average speed of Y is 60km per hour and x arrives at P 25 minutes earlier than Y. What is the average speed of X?
51\(\frac{3}{7}\)km per hour
72km per hour
37\(\frac{1}{2}\) km per hour
66km per hour
75km per hour
Correct answer is B
Distance travelled by both x and y = 150 km.
Speed of y = 60km per hour, Time = \(\frac{dist.}{Speed}\)
Time spent by y = \(\frac{150}{60}\)
= 2\(\frac{3}{6}\)hrs
= \(\frac{1}{2}\) hrs
if x arrived at p 25 minutes earlier than y, then time spent by x = 2 hour 5 mins
= 125 mins
x average speed = \(\frac{150}{125}\) x \(\frac{60}{1}\)
= \(\frac{9000}{125}\)
= 72 km\hr
If the pass mark was 4. What percentage of the pupils failed the test? ...
Simplify: 11011\(_2\) - 1101\(_2\) ...
The graph represents the relation y = xo2 - 3x - 3. Find the value of x for which x2 - 3x = 7...
lf \(log_q p= r\), express p in terms of q and r...
One of the interior angles of a regular polygon is 120°. Find the number of sides of the polygon...
If events X and Y are mutually exclusive, . P(X) = 1/3 and P(Y) = 2/5, P(X∩Y) is ...
Find the value of \(\frac{tan 60^o - tan 30^o}{tan 60^o + tan 30^o}\) ...
Simplify \(\frac{3(2^{n+1}) - 4(2^{n-1})}{2^{n+1} - 2^n}\) ...
Find the value of x in the equation 3x\(^2\) - 8x - 3 = 0...