Question

3 table lamps and 2 night lamps cost Rs.1900 and 2 table lamps and 4 night lamps cost Rs.1800. Find the cost of 10 table lamps and 20 night lamps.

Answer 1

Answer:

TABLE LAMP = 5000

NIGHT LAMP = 4000

Step-by-step explanation:

3 table lamps and 2 night lamps cost Rs.1900 and 2 table lamps and 4 night lamps cost Rs.1800. Find the cost of 10 table lamps and 20 night lamps.

3 TL + 2 NL = 1900 * 2

2 TL + 4 NL = 1800 *3

6 TL + 4NL = 3800

6 TL + 12 NL = 5400

- 8 NL = - 1600

NL = 1600 / 8

NL = 200

# 3TL + 2 NL = 1900

3TL + 2*200 = 1900

3TL = 1900-400

3TL = 1500

TL = 1500/3 --> 500

TL = 500

COST OF 10 TL AND 20 NL IS

10*TL , 20*NL

10*TL , 20*200= 4000 --> NL

10*500 = 5000 TL