**The Total cost of flooring a room at Rs.8.50 per square meter is Rs.510. If the length of the room is 8km it’s breadth is__________?**

**A. 7.5m**

B. 8.5m

C. 10.5m

D. 12.5m

**A. 7.5m**

B. 8.5m

C. 10.5m

D. 12.5m

A. Neither increased nor decreased

B. Increased by 1%**C. Decreased by 1%**

D. Decreased by 10%

A. 17cm

B. 20cm

C. 23cm**D. 26cm**

A. 3m**B. 5m**

C. 8.75m

D. 10m

Explanation:

Area of the field = (38 x 32)m2

Let the width of the path be x metres

Area with out path = (38-2x)(32-2x)m2

= 1216+4×2 -140x

Area of the path = 1216 –(1216 +4×2 -140x)

= 140x -4×2 140x -4×2 = 600

=> 4×2-140x +600 =0

=> x2 -35x +150 =0

=> (x-30)(x-5)=0

=> X =5 m

**A. 200m**

B. 210m

C. 220m

D. 185m

A. 36cm

B. 38cm**C. 28cm**

D. 18cm

A. 21 Sq.m

B. 42 Sq.m**C. 54 Sq.m**

D. 108 Sq.m

A. 430

B. 440**C. 450**

D. 460

A. 200cm**B. 175cm**

C. 125cm

D. 150cm

A. 11m

B. 13m

C. 15m**D. 17m**