Question

A chair costs ₹ 452 and a table costs ₹ 1750. What will be cost of 15 chairs and 30
tables?

Answer 1

Answer:

Solution



Verified by Toppr

x=5t2+18t(1)v=dtdx=10t+18

att=2s,v=10×2+18=38m/s

(2)Average,velocity=timedisplacementatt=2,x=5(2)2+18×2=56mt=3,x=5(3)2+18×3=99mAveragevelocity=3−299−56=43 m/s

Answer 2

Step-by-step explanation:

4C+3T = 2100. Multiply the equation by 5 to get

20C+15T = 10500 …(1)

5C+2T = 1750. Multiply the equation by 4 to get

20C+8T = 7000 …(2)

Subtract (2) from (1) to get

7T =3500, or

T = 3500/7 = 500

From (2), 20C= 7000–8T = 7000–4000 = 3000, or

C = 3000/20 = 150

Each chair costs Rs.150 and each table, Rs.500. Answer.