Question

Six oil tankers can be filled by a pipe in $\dfrac{1}{2}$

hours.



i. How long does the pipe take to fill 4 such oil tankers?



ii. How many such oil tankers can be filled in 12 hours?



Solve this easy class 1 standard question fast.


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Answer 1

According to the question,

6 oil tankers can be filled by a pipe =4

2

1

=

2

9

hours

1 oil tanker can be filled by a pipe =

2×6

9

hours

4 oil tankers can be filled by a pipe

=

2×6

9

×4

=

6

9

×2

=

6

18

=3 hours

Step-by-step explanation:

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Answer 2

Answer:

1. Following direct variation

(sorry mene vo table bhi banna tha but aata nhi kese banau..)

6 tank= 30 mins

4 tank=x

=

$x = \frac{4 \times 30}{6} \\ = x = 20mins$

2. Folowing direct variation

12hrs. Into mins = 720mins

= 6tank=30mins

=x= 720

$x = \frac{6 \times 720}{30} \\ = 6 \times 24 = 144 \: tanks$