A. 5.5km/h
B. 6.5km/h
C. 7.5km/h
D. 8.5km/h
. If the roots, x1,and x2, of the quadratic equation x2 - 2x + c = 0 also satisfy the equation 7x2 - 4x1 = 47, then which of the following is true?
A man purchased 40 fruits; apples and oranges for Rs 17. Had he purchased as many as oranges as apples and as many apples as oranges, he would have paid Rs 15. Find the cost of one pair of an apple and an orange
A singles tennis tournament is held, in which 30 men participated. If a player is eliminated as soon as he loses a match, how many matches are required to determine the winner
P lent Rs.600 to Q for 2 years and Rs.150 to R for 4 years and received altogether from both Rs.90 as interest. Find the rate of interest, simple interest being calculated
For prime numbers p and q, p + q = 102 and p > q. What is the least possible value of p − q?
If a1 = 1 and an+1 = 2an + 5, n = 1, 2 ...., then a100 is equal to :
If x + y = 2, then the value of x4 + y4 – x3 y2 – x2 y3+16xy is equal to
Manzoor had two equations containing three variables each. If they were x + 2y + 5z = 33, 2x+ 3y + z = 27, then which of the following choice will help him get a unique solution for x, y and z?
The difference in the money between A and B is Rs.1450.C has money twice of B and difference in the money between A and C is Rs.700.So the amount with A is?
If l(s) = 3s2 + 3s + 3, which of the following is equal to l(-3.5)?