Question

Write a linear equation in two variables for these statements and identify a, b and c.

Also find two solutions for each.

(i) twice the cost of a chair is thrice the cost of a bench.

(iii) the vikram fare in dehradun is Rs. 7 for first kilometre and Rs. 5 per km for subsequent distance.

(iii) 5 graphs and 10 diagrams are completed in 50 minutes.

Also please do not answer incorrect. ​

Answer 1

Answer:

Step-by-step explanation:

i) Let the cost of chair be c and cost of bench be b

Then 2c = 3b

if c=3 , b=2  

if c=6 , b=4

ii) Let the total kilometre traveled be x km

Then Fare = 7 + 5(x-1)

If x=5 , Fare = 7+20=27.

if x=10 Fare = 7+45 = 52

iii) Let time taken for graph be g minutes and diagram be d minutes

Then 5g+10d = 50  

if g=4 , d=3

if g=6 , d=2