The cost of 4 pens and 4 pencils is Rs. 100. Three times the cost of a pen is Rs. 15 more than the cost of a pencil box. The cost of a pen and a pencil box respectively are
A.Rs.15 and Rs.8
B.Rs.10 and Rs.15
C.Rs.12 and Rs.10
D.Rs.16 and Rs.12
The cost of 4 pens and 4 pencils is Rs. 100. Three times the cost of a pen is Rs. 15 more than the cost of a pencil box. The cost of a pen and a pencil box respectively are
A.Rs.15 and Rs.8
B.Rs.10 and Rs.15
C.Rs.12 and Rs.10
D.Rs.16 and Rs.12