The premises of a bank are to be renovated. The renovation is in terms of looring. Certain areas are to be floored either with marble or wood. All reooms/hals and pantry are rectangular. The area to be renovated comprises of a hall for customer transaction measuring 23 m by 29m, branch manager's room measurng 13m, by 71, a pantry measuring 14m by 13m, a record keeping cum server room measuring 21 m by 13m and area measruing 29 m by 21m. Total area of the bank is 2000 squae meters. The cost of wooden flooring is Rs. 170/-per squae meter and the cost of marble flooring is Rs. 190/-per square meter. The locker area, record keeping cum server room and pantry are to be floored with marble. The branch manager's room and the hall for customer transaction are to be floored with wood. No other area is to be renovated in terms of flooring.
What is the respective ratio of the total cost of wooden flooring to the total cost of marble flooring ?

Options

A. `2.2`
B. `2.4`
C. `4.2`
D. `4.4`

Answer

B

Explanation

percentage area of bank not to be renovated
`=("Area bank not be renovated")/("Total area of bank")implies(48)/(2000)xx100=2.4%`