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A sum of money under compound interest doubles itself in 4 years. In how many years will it become 16 times itself?

Option: 1
12 years

Option: 2
16 years

Option: 3
8 years

Option: 4
None of these

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Posted by

Kumar

A certain loan amounts, under compound interest, compounded annually earns an interest of Rs.1980 in the second year and Rs.2178 in the third year. How much interest did it earn in the first year?
Option: 1
Rs.1600

Option: 2
Rs.1800

Option: 3
Rs.1900

Option: 4
None of these

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Posted by

Ram

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The distance between two stations A and B is 440 km. A train starts at 4 p.m. from A and move towards B at an average speed of 40 km/hr. Another train starts B at 5 p.m. and moves towards A at an average speed of 60 km/hr. How far from A will the two trains meet and at what time?
Option: 1
200,8 p.m.

Option: 2
300,9 p.m.

Option: 3
200,9 p.m.

Option: 4
300,8 p.m.

The sum of the distances covered by both trains should be equal to the total distance between the stations A and B: 40t+60(t−1)=44040t + 60(t - 1) = 44040t+60(t−1)=440

40t+60t−60=440
100t−60=440
100t=500
t=5

So, the trains will meet 5 hours after Train A starts from A.

Train A starts at 4 p.m. so 5 hours from 4 p.m. is 4 p.m. + 5 hours = 9 p.m.

The two trains will meet 200 km from A at 9 p.m.

Option 3: 200, 9 p.m.

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Posted by

Sara P

PQ is a tunnel. A dog sits at the distance of 5/ 11 of PQ from P. The train whistle coming from any end of the tunnel would make the dog run. If a train approaches P and dog runs towards P the train would hit the dog at P. If the dog runs towards Q instead, it would hit the dog at Q. Find ratio of speed of train and dog?

Option: 1
5:2

Option: 2
16:5

Option: 3
11:1

Option: 4
34:3

Option 3 - 11:1

######## P____5_____¶______6_____Q

"¶" is the dog located inside the tunnel PQ and #####... is a train approaching to it.

Case 1 - Dog decides to reach point P

Distance covered by Dog - 5 parts and train reaches at P

Case 2 - Dog decides to run towards point Q

At the time train reaches to point P, the dog covers 5 parts in direction of Q. Now the left out part covered by dog will be 1 part towards Q .

At the time dog covers 1 part and reaches Q, train covers whole 11 parts of tunnel and reaches from P to Q.

So, 11 part of train is eual to the 1 part covered by the dog to reach Q.

Ratio of their speeds - Train:Dog = 11:1

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Posted by

Vaibhavi Gupta

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This is an abiotic resource a option grass B option forest C option mineral MCQ?

The correct option is C) Mineral.

Mineral is an Abiotic resource as it is not derived from living organisms.

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Posted by

Deependra Verma

Ankita and pooja are good friends but Poojas parent do not like girls going out without elders.discuss

Ankita and Pooja are good friends and wants to hang out together sometimes. However, Pooja's parents do not like girls going out without elders or adult supervision. According to me, they are right as the children are very young school going children. They should meet each other only at their homes and nearby places such as parks, eating joints only in presence of their parents. They should listen to the advice of their elders and follow their guidelines.

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Posted by

Deependra Verma

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What is next 1,4,5,6,7,9,11,?

$One$
$Four$
$Five$
$Six$
$Seven$
$Nine$
$Eleven$
Above all numbers have absence of letter t in their names
so the next number of this series is100

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Posted by

Deependra Verma

What is the use and difference in with and without...........

Examples of with sentences-

1.You can play with me.

2.You can eat with me.

3. You have to stay with me.

With means doing something along with the other person. It means two person together will do some action or work.

Examples of without sentences-

1. You cannot live without oxygen.

2. Without water, there is no life on Earth.

3. I want to do my work silently, without anyone's interruption.

The word without means lacking something. It also means in absence of something. The term without means not needing something or avoiding something as well.

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