Question

The wages w
(in £) Sara earns is the number of hours she works n
multiplied by her hourly rate r
(in £ per hour). Enter a formula for Sara's wages and enter the wage she would earn if she worked 32 hours at a rate of £9.20 per hour

Answer 1

Answer:

£294.4

Step-by-step explanation:

We cam use unitary methods . There are 2 methods in unitary methods , they are direct and indirect variation .

Direct variation :

example : If 3 chocolate cost ₹9 . what is the cost of 6 chocolates ?

ans: Chocolate cost

3 9

6 x

In this method 1st thing (chocolate) and 2nd thing (cost ) should increase or decrease. How is in this example if number of chocolates is increased as 3-6 . So then the cost also will increase.

• Now we have to cross multiply .

3x =9*6

x =9*6/3

x = ₹ 18 .

Indirect variation :

example : If 5 mens can complete the work in 10 days. How many days will take to complete the same work by 10 mens ?

ans : mens days

5 10

10 x

In this method 1st thing (mens) and 2nd thing (days) if one increase one will decrease .It will be opposite to each . How is in this example if number of mens is increased as 5-10 . So then the days will decrease because 10 mens can do the work in fewer days when compared to 5 mens .

• A trick in this method is we have to multiply the no. which is up ( 5 and 10 ) and divide by the no. which is down (10) .

x = 5*10/10

x = 5 days.

Explanation of your question :

ans: hours rate

1 9.20

32 x

• Both side are increasing so it is direct .

x = 9.20*32/1

x = £ 294.4