A train started at 9am at station X with a speed of 72 kmph. After two hours anther train started at station Y towards X with a speed of 90kmph. The two trains are expected to cross each other at 1.30pm. Owing to a signal problem arising at 12 noon the speed of each of them was reduced by the same quantity and they crossed each other at 4.30pm?
What is the new speed of the train that started from station X
18
36
45
54
For how many of the following range of x is x^3> x^1/3 ^1/x
1) x2)-1
The difference between the simple interest and the compound interest accrued in 2yrs on a certain sum at a certain rate of interest is Rs 80. If the simple interest for the second year is Rs 1000. Find the sum
10000
12000
15000
12500
Q2
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K is a three digit no. such that the ratio of the no. to the sum of its digits is least. what is the difference b/w the hundereds and the tens digits of K?
a)9 b)8 c)7 d)none of these. explain the ans. plz
(25)^(25)^25 when divided by 9 gives the remainder ??
if x is a real number , and (a^2+b^2)x^2+2a(b+c)x+(a^2+c^2)=0. then which of the following is true?
a)c^2=ab
b)b^2=ac
c)a^2=bc
d)ab+bc+ca=0
plzz explain....
certain number of consecutive natural numbers were written on blackboard if one of them is erased the average of the remaining numbers is 32(7/24)=775/24 which of the following number is erased
28
25
25
16
??
Determine the sum of all positive integers which do not appear as one of the entries in a Pythagorean triple. ?
For which of the following value of K does the following system of equations yield a unique solution of x such that the solution is positive.
x^2-y^2 = 0
(x-k)^2 + y^2 = 1
a.2 b. 0 c.rt2 d.-rt2 e.none of these
There were two escalators (moving stairways) in a mall, with the same number of steps, the first one moving up and the second moving down at the same speed. Ram and Sameer walk up the first escalator at their respective uniform speeds. Ram took 2 steps in the time that Sameer took one. Ram and Sameer reached the top of the escalator after taking 30 steps and 20 steps respectively. Ram then started to walk down the second escalator. At the same time, Tarun started to walk up the second escalator at twice Ram's speed. How many steps would Tarun take before meeting Sameer?
Let a, b, c and d are positive integers such that a^ 5 = b^ 4 and c^ 3 = b^ 2. If c - a = 19, then determine d - b.
- 540
- 978
- 720
- 757
0 voters
The ratio of the present ages of a man and his wife is 5 : 4. After 20 years, the ratio of the ages of the man and his wife could be
11 : 8
9 : 7
15 : 13
19 : 15
a vessel has 300 ml of pure milk. 30 ml of milk is removed and 30 ml of water is poured into the vessel( bringing the volume of mixture in the vessel back to 300 ml). if this operation is repeated another 2 times what % of milk in the vessel is at the end ????
A girl's mother comes to pick her up from school . The mother comes from home in a car in such a time such that she will reach the school when the school gets over,exactly in the time to pick up her daughter. One day the school got over 2 hours early and instead of waiting for those 2 hours at school, the girl decided to walk towards home and met her mother along the way. That day they reached home 30 mins early.Find the ratio of the speeds of mother and her daughter
- 7:1
- 6:1
- 9:1
- 8:1
0 voters
People can u plz share ur appraoch for this LR set in AIMCAT 1416...i am finding it difficult to comprehend the soln given...
243^1500 - 1 is divided by:-
1.1001
2.1501
3.37
4.23
in wht ratio ram mix 2 varieties of barley costing 20 nd 24 /kg so dat by selling it at 27.60 / kg makes a profit of 20% ?????????
The last two digits of 15*37*63*51*97*17 ?
Determine the length of the tangent to a circle of radius 5 cm from a point at a distance of 13 cm from the centre of the circle .