A student preparing his lessons for montly test does hard work.____.

A school wants to award its students for the value of honesty, regularity and hard work will total cash award of Rs. 6000. Three times the award money for hard work added to that added to that given for honesty amounts to Rs. 11000. The award money given for honesty and hard work together is double the one given for regularity. Represent the above situation algebraically and find the award money for each value, using matrix method.

How does a submarine work?

How does a syringe work?

In a test. 90% of the students passed and 4 students failed. How many students appeared for the test?

A student's mean score on 5 tests was 84. The student's mean score on the first 4 of these tests was 87. What was the student's score on the fifth of these tests ?

In a class of 85% students pass in a surprise test. What per cent of students did not pass?

The average of the test scores of a group of x students is 76 and the average of the test scores of a group of y students is 90. When the scores of the two groups of students are combined, the average test score is 85. What is the value of of (x)/(y) ?

A student appears for tests I, II and III. The student is successful if he passes either in tests I and II or tests I and III. The probabilities of the student passing in tests I, II, and III are, respectively, p, q, and 1/2. then p(1+q)=

A coolie carrying a load on his head and moving on a frictionless horizontal platform does no work. Explain the reason why.

The test grades of the 26 students in a math class are shown in the chart above. What is the median test grade for the clsss?