A person speed at a rate of 40 km per hour. If he increases his speed by 20% what is his new speed in metre per minute?

Original speed= 40 km per hour

If the speed is increased by 20%

Then the new speed 20% of 40=8 km per hour

That is distance covered in 1 hour =8 km

Distance covered in 60 minute= 8000 m

The artist distance covered in 1 hour =8 km

Distance covered in one minute =133.3 m

.
The sum of Tina and Tuffy age is equals thrice their Mather's age. Tina is 2 years younger than Tuffy. If the age of mother is 42, find the difference between age of mother and elder child.

Taffy=x elder child

Tina =x-2 younger child

Given condition:

3(Tuffy+Tina)=Mother

3(x-2+x)=42

6x-6=42

6x=48

x=8

Tina =6

Tuffy=8

.
The average of four consecutive odd numbers is 43. What is the difference between the highest and lowest numbers.

Let's 4 consecutive odd numbers are:

3, 5, 7, 9

Lowest term is 3 and highest is 9

9-3 =6

So, difference of 6 will remain the same in the consecutive series numbers.

.
In following questions, a sequence of groups of alphabets and numbers is provided with one term missing , Choose the missing term from options. 2Z5, 7Y7, 14X9, 23W11, 34V13, ?

The first numbers in the terms follow the sequence + 5, + 7, + 9, + 11, + 13. The middle letters form the series Z, Y, X, W, V, U.

The last numbers from the series 5, 7, ,9 , 11, 13, 15.

.
A family consists of six children naming P,Q,R,X,Y and Z. Q is the son R but R is not the mother of Q. P and R are married couples. Y is brother of R. X is the daughter of P. Z is the brother of P. How many children does P have?

Q is the son of R but R is not the mother. So,P is married to R . So, P is the wife of R and the mother of Q. X is daughter of P and hence of R and so she is the sister of Q. Y is the brother of R and Z is the brother of P. Clearly Q is the son of P and X is daughter of P. so, P has two children. .

All the 6 members of a family A.B.C.D.E.and F are traveling together . B is the son or C but C is not the mother of B ,A and C are a married couple . E is the brother of C.D is the daughter of A.F is the brother of B.

How many male members are there in the family?

B is the son of C is not the mother of B means C is the father of B.A is married to C means A is the mother of B .F is brother 0f B means F is son of A and C.D is daughter of A means D is daughter A and C. A is the mother and hence female .B is the son and hence male. C is the husband and hence female. D is the daughter and hence female. E is the brother and hence male. F is the son and hence male. So, there are four males..