At a certain time in a deer park, the number of heads and the number of
legs of deer and human visitors were counted and it was found there were 39
heads & 132 legs. Find the number of deer and human visitors in the
Find the value of p and q for which the system of equations represent
2x +3y = 7, (p+q+1)x +(p+2q+2)y = 4(p+q)+1
Students are made to stand in rows. If one student is extra in a row there
would be 2 rows less. If one student is less in a row there would be 3 rows
more. Find the number of students in the class.
larger of two supplementary angles exceeds the smaller by 180,
A train covered a certain distance at a uniform speed. If the train would
have been 6km/hr faster, it would have taken 4hours less than the scheduled
time. And if the train were slower by 6km/hr, it would have taken 6 hours
more than the scheduled time. Find the distance of the journey.
chemist has one solution which is 50% acid and a second which is 25% acid.
How much of each should be mixed to make 10 liters of 40% acid solution.