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In a engineering, test, a rocket sled is propelled into a target. If the sled's distance d in meters from the target is given by the fomula d = - 1.5 t2+120, where t is the number of seconds after rocket ignition, then how many seconds have passed since rocket ignition when the sled is 10 meters from the target?
A
2.58
B
8.59
C
8.94
D
9.31
Correct Answer:
8.59
In a race of 1000 meters, A can beat B by 100 meters, in a race of 800 meters, B can beat C by 100 meters. By how many meters will A beat C in a race of 600 meters?
A
125.5 meters
B
126.5 meters
C
127.5 meters
D
128.5 meters
In a class, 120 students are male and 100 students are female. 25% of male students and 20% of female students are engineering students. 20% of the male engineering students and 25% of the female engineering students passed the final exam. What percentage of engineering students passed the exam?
A
10%
B
16%
C
22%
D
25%
In a class, 120 students are male and 100 students are female. 25% of the male students and 20% of the female students are engineering students. 20% of the male engineering students and 25% of the female engineering students passed the final exam. What percentage of engineering students passed the exam?
A
5%
B
10%
C
16%
D
22%
In a class, 120 students are male and 100 students are female. 25% of the male students and 20% of the female students are engineering student. 20% of the male engineering students and 25% of the female engineering students passed the final exam. What percentage of engineering students passed the exam?
A
5%
B
10%
C
16%
D
22%
In a class, 120 students are male and 100 students are female , 25% of the male students and 20% of the female students are engineering students . 20% of the male engineering students and 25% of the female engineering students passed the final exam. What percentage of engineering students passed the exam ?
A
5%
B
10%
C
15%
D
22%
The following question is based on the given data for an examination. A. Candidates appeared 10500 B. Passed in all the five subjects 5685 C. Passed in three subjects only 1498 D. Passed in two subjects only 1250 E. Passed in one subject only 835 F. Failed in English only 78 G. Failed in Maths only 275 H. Failed in Physics only 149 I. Failed in Chemistry only 147 J. Failed in Biology only 221 How many candidates passed in at least four subjects ?
A
6555
B
5685
C
1705
D
870
A mining project comprising of A, B and C activities is scheduled for 90 days at a cost of Rs. 1200 million. The manager of the project decides to reduce the time for completion of the project to 85 days. The decision was taken after 45 days, The minimum cost of the project in million rupees after crashing 5 days is
A
100
B
1300
C
1475
D
1825
A rocket is launched to travel vertically upward with a constant velocity of 20 m/s. After travelling for 35 seconds, the rocket develops a snag and its fuel supply is cut off. The rocket then travels like a free body. The height achieved by it is
A
680 m
B
720 m
C
800 m
D
700 m
In the project network shown activity durations are given in months. If the activity can be crashed to expedite the project, which one would you crash and by how many months?
A
C, 1
B
C, 2
C
D, 1
D
E, 1
Four mines A, B, C and D are located along a road as shown with production in Mt per year 1, 2, 1 and 3 respectively. In order to handle total coal produced. the ideal distance of a coal washery along the road from the mine A in Km is
A
4.01
B
3.91
C
3.81
D
3.71
