Q1. 
The ages of the two persons differ by 20 years. If 5 year ago, the older one be 5 times as old as the younger one, then their present ages, in year are: 
A.  25, 5 

B.  30, 10 

C.  35, 15 

D.  50, 30 
Q2. 
A man arranges to pay off a debt of Rs 3600 by 40 annual installments which are in A.P. When 30 of the installments are paid he dies leaving onethird of the debt unpaid. The value of the $8^{th}$ installment is: 
A.  Rs 35 

B.  Rs 50 

C.  Rs 65 

D.  Rs 70 
Q3. 
A student was asked to divide a number by 6 and add 12 to the quotient. He, however first added 12 to the number and then divided it by 6, getting 112 as the answer. The correct answer should have been: 
A.  114 

B.  118 

C.  122 

D.  124 
Q4. 
A man arranges to pay off a debt of Rs 3600 by 40 annual instalments which are in $A.P$. When 30 of the instalments are paid he dies leaving onethird of the debt unpaid. The value of the $8^{th}$ instalment is: 
A.  Rs 35 

B.  Rs 50 

C.  Rs 65 

D.  Rs 70 
Q5. 
A student was asked to divide a number by 6 and add 12 to the quotient. He, however first added 12 to the number and then divided it by 6, getting 112 as the answer. The correct answer should have been: 
A.  122 

B.  118 

C.  114 

D.  124 