Answer Posted / uma mahesh

127.179(app)


given distance of the train along the wind is 695
and againt the wind is 498

and time = distance/speed

as we know that time is equal in both the cases hence equate

695/s1=498/s2-----------(1);

where s1=speed of the plane + speed of the wind
and s2=speed of the plane -speed of the wind


given that speed of the wind is 21k/h

s1=sp+21
s2=sp-21

substitu in eq 1

we get the answer as 27.17(app)

How many ewes (female sheep) in a flock of 50 sheep are black? 1. There are 10 rams (male sheep) in the flock. 2. Forty percent of the animals are black. statement 1 alone is sufficient, but statement 2 alone is not sufficient to answer the question statement 2 alone is sufficient, but statement 1 alone is not sufficient to answer the question each statement alone is sufficient statements 1 and 2 together are not sufficient, and additional data is needed to answer the question

4012

---

THERE ARE 3 PILES OF BOOKS ON THE TABLE YOU NEED TO ARRANGE THEM IN THE SELF SUCH THAT 1ST BOOK OF EACH PILE GETS PLACED ON THE SELF,WHAT IS THE POSSIBLE NO OF ARRANGEMENTS

3585

---

The mean of 100 bags was found to be 30. What will be the correct mean if at the time of calculation two bags were wrongly taken as 32 and 12 instead of 23 and 11?

1383

---

Find the Series number: 0,2,3,5,8,10,15,17,24,26,..

1164

---

Dear Sir/ Madam, Kindly send me the model question answers for RRB-Technician Signal(Physics/Maths) to saranya67veena@gmail.com

2520

---

What is the least number of squares marbles required to pave the floor of a room 15 m 17 cm long and 9 m 2 cm broad?

1128

---

In a class total 34 students, 16 are have a brother, 15 are have sisters, 9 students don't have either brothers or sisters.Find the number of students having both brother and sisters.

1783

---

58,27,12,x,2,1. Find x.

1347

---

a bus started from bus stand at 8.00am and after 30min staying at destination it returned back to the buss tand.the destination is 27 miles from the bustand the speed of the bus 50percent fast speed at what time it returns to the bustand.

1259

---

A building with height D shadow upto G. What is the height of a neighbouring building with a shadow of C

1075

---

Conversation between two mathematicians: first : I have three children. The product of their ages is 36 .. If you sum their ages . it is exactly same as my neighbour's door number on my left. The second mathematician verifies the door number and says that the not sufficient . Then the first says " o.k one more clue is that my youngest is the youngest" Immediately the second mathematician answers . Can you answer the question asked by the first mathematician? What are the children ages?

2088

---

Each side of a rectangle is increased by 100% .By what percentage does the area increase?

1054

---

A motorcycle travels a certain length taking 7 hrs in the journey ahead, while returning, the increased speed of 12km/hr takes about 5 hrs. What was the length covered in this journey?

1111

---

In a cycle race there are 5 persons named as J, K, L, M, N participated for 5 positions so that in how many number of ways can M make always before N?

1971

---

No of financial emergency announced by president

2524

---