Question

send me all the answers 6th grade math

Answer 1

Question 8:-

Are 30,40,45 and 60 in proportion?

Solution:-

• Given that :30,40,45 and 60 in proportion.

$\sf \: Ratio \: of 30 \: to \: 40 = \frac{30}{40}$

$= 3 \ratio \: 4$

$\sf \: Ratio \: of \: 45 \: to \: 60 = \frac{45}{60} = \frac{15 \times 3}{15 \times 4}$

$\sf \: 3 \ratio4$

$\sf \: \because \: 30,40,45 \: are \: in \: proportion$

Question 9:-

If the cost of 20 bags is Rs.1600 ,find the cost of 8 bags.

Solution:-

$\sf \: cost \: of \: 20 \: bags = 1600$

We will find the cost of 1 bag .

$\sf \: cost \: of \: 1 \:bag= \frac{1600}{20} = 800$

Cost of 1 bag is 800.

$\sf \: cost \: of \: 8 \: bag = 800 \times 8 = 6400$

The cost of 8 bags is Rs.6400.

Question 10:-

Cost of dozen mangoes is Rs.300 .Find the cost of 15 such mangoes.

Solution:-

$\sf \: Cost \: of \: dozen \: mangoes \: is \: Rs.300$

We will find the cost of 1 mango to find the cost of 15 mangoes.

$= \frac{300}{12} = 25$

Cost of 1 mango is rs.25

Cost of 15 mangoes=25×15

=Rs.375.

Answer 2

Step-by-step explanation:

Question 8:-

Are 30,40,45 and 60 in proportion?

Solution:-

Given that :30,40,45 and 60 in proportion.

\sf \: Ratio \: of 30 \: to \: 40 = \frac{30}{40}Ratioof30to40=

40

30

= 3 \ratio \: 4=3:4

\sf \: Ratio \: of \: 45 \: to \: 60 = \frac{45}{60} = \frac{15 \times 3}{15 \times 4}Ratioof45to60=

60

45

=

15×4

15×3

\sf \: 3 \ratio43:4

\sf \: \because \: 30,40,45 \: are \: in \: proportion∵30,40,45areinproportion

Question 9:-

If the cost of 20 bags is Rs.1600 ,find the cost of 8 bags.

Solution:-

\sf \: cost \: of \: 20 \: bags = 1600costof20bags=1600

We will find the cost of 1 bag .

\sf \: cost \: of \: 1 \:bag= \frac{1600}{20} = 800costof1bag=

20

1600

=800

Cost of 1 bag is 800.

\sf \: cost \: of \: 8 \: bag = 800 \times 8 = 6400costof8bag=800×8=6400

The cost of 8 bags is Rs.6400.

Question 10:-

Cost of dozen mangoes is Rs.300 .Find the cost of 15 such mangoes.

Solution:-

\sf \: Cost \: of \: dozen \: mangoes \: is \: Rs.300CostofdozenmangoesisRs.300

We will find the cost of 1 mango to find the cost of 15 mangoes.

= \frac{300}{12} = 25=

12

300

=25

Cost of 1 mango is rs.25

Cost of 15 mangoes=25×15

=Rs.375.