In alphabet series, some alphabets are missing which are given in that order as one of the alternatives below it. Choose the correct alternative.

a _ cacbc _ baca _ _ b

The series is abcac / bcaba / cabcb. Thus, the series consits of three sequence. The first three letters of each sequence are in a cyclic order and the last two letters of each sequence are the same as the first and third letters of the sequence.

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Bell and Stacy are two sisters. The sum of the ages of Stacy and Bell is 80. Before ten years from now, Bell age was twice as stacy's age. How old is Elder sister now?

1st Condition:

B+S=80.......(1)

2nd Condition:

2S-B=10...........(2)

By solving these equation:

B=50 and S=30

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The sum of age of Tony and Teddy equals thrice their mother's age. Tony is 2 years younger than Teddy. If the age of mother is 42, find the age of Teddy?

Lets

Teddy = X

Tony = X - 2

given conditions

3 (Tony + Teddy) = mother

3 (x - 2 + x )= 42

6 x- 6 = 42

6 x = 48

X=8

Tony = 6 and Teddy = 8

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In alphabet series, some alphabets are missing which are given in that order as one of the alternatives below it. Choose the correct alternative.

_ c _ bd _ cdcda _ a _ db _ a

The series is acdb / dacb / cdab / acdb / da. The third letter in each sequence becomes the first letter in the following sequence..

A person can travel at the speed of 40 miles per hour. If he increases his speed by 50% how long will it take to cover 330 miles?

Original speed =40 miles per hour

If the speed is increased by 50%

Then the new speed 15% of 40=60 miles per hour

Time= 330 / 60

Time =5.5 hours

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If x and y are the two digits of the number 653xy such that this number is divisible by 80, then x + y = ?

80 = 2 x 5 x 8

Since 653xy is divisible by 2 and 5 both, so y = 0.

Now, 653x is divisible by 8, so 13x should be divisible by 8.

This happens when x = 6.

x + y = (6 + 0) = 6.

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