Question

8000
Assertion (A): A plumber will be paid accord to following schemes:In first scheme he will be paid 500.rs plus 70.rs per hour. If he work for less
than 10 hours the first scheme give better wages.
Reason (R): In the first scheme he will get a fixed 500.rs whereas longer than 10 hours second scheme will pay more.
(1) Both A and R are true and R is the correct explanation of A
(2) Both A and R are true and R is not a correct explanation of A
(3) A is true but R is false (4) A is false but R is true​

Answer 1

Step-by-step explanation:

Given x hours  

∴ The wage earned according to scheme 1 is 500+70×x

The wage earned according to scheme 2 is 120×x

For scheme 1 to be better  

⇒500+70×x>120×x

⇒50×x<500 that is x<10

⇒for x= 1 to 9 hours scheme 1 is better therefore the total values of x are 9