ARITHMETIC In a group of 4 boys and 3 girls, 3 members | Data Interpertation & airthmatic

ARITHMETIC


In a group of 4 boys and 3 girls, 3 members are to be selected. In how many different ways can they be selected such that at least one boy should be there?

a) 56
b) 60
c) 34
d) 42
e) None of these

 The first variety of rice priced at Rs. 52/kg is mixed with another variety of rice, which is in the ratio of 3 : 4. The mixed variety of rice is priced at Rs. 60/kg. Find the price of second variety of rice?

a) Rs. 58/Kg
b) Rs. 64/Kg
c) Rs. 62/Kg
d) Rs. 66/Kg
e) None of these

Pipe A and pipe B fill the tank in 30 hours and 20 hours respectively. If pipe A and B together opened simultaneously and after 10 hours Pipe B closed, in how many hour will pipe A take to fill the remaining tank?

a) 3 hours
b) 5 hours
c) 7 hours
d) 8 hours
e) None of these

The average salary of all the employees in a small company is Rs.10000. The average salary of 10 engineers is Rs.14000 and the average salary of the rest is Rs.5000. What is the total number of employees in the company?

a) 16
b)