Question

Practice Set 38
1. Five workers take 12 days to weed a
field. How many days would 6 workers
take ? How many would 15 take ?
3. ME
lo
h​

Answer 1

Answer:

1st part

We have,

Worker W

1

=5

Weed a field in days=D

1

=12days

If,

Take worker W

2

=6

Then, Days D

2

=?

Then, we know that,

W

1

D

1

=W

2

D

2

5×12=6×D

2

D

2

=

6

5×12

D

2

=10days

2nd Part,

If workerW

3

=15

Then,

Days D

2

=?

Then, we know that,

W

1

D

1

=W

3

D

3

5×12=15×D

3

D

3

=

15

5×12

D

3

=4days

Hence, this is the answer.

Answer 2

Step-by-step explanation:

5x × 12 = 60x

60x=6x × y

60x / 6x = y

10= y

y=10

60x = 15 × yx

y= 60x / 15x

y=4