Math, asked by KYROMAX, 1 month ago

Which of the following are in proportion? (a) 2, 3, 20,30 (b) 3, 4, 15, 18 (c) 1, 3, 11, 22 (d) 2, 5, 40, 80

Answers

Answered by Anonymous
52

\huge{\blue{\overbrace{\bf{\pink{A)\:2,3,20,30}}}}}

2,3,20,30 are in proportion.

2/3 = 20/30

2/3 = 2/3

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Answered by Syamkumarr
5

Answer:

2 : 3 and 20 :30 are in proportion

Step-by-step explanation:

The given numbers are might be ratio as   2: 3 : : 20:30

                                                                       3 :4 : : 15: 18

                                                                        1 :3 : : 11 : 22

                                                                       2 :5 : : 40: 80

here we need to find if given ratios are in proportion are not

If  a : b and c : d are in proportion the ad = bc

1) 2 : 3 : : 20 : 30 ⇒  2× 30 = 3× 20

                            ⇒ 60 = 60

                  ∴ 2 : 3 : : 20: 30 are in proportion

2) 3 : 4 : :15 : 16  ⇒ 3 ×16 = 4 ×15

                            ⇒ 48 \neq  60

                   ∴   3 :4 : : 15 : 16 are not in proportion

3) 1 :3 : : 11 : 22 ⇒ 1×22 = 3 ×11

                         ⇒ 22  \neq 33

                  ∴ 1 :3 : : 11 : 22 are not in proportion

4) 2 : 5 : : 40 : 80  ⇒ 2×80 = 5×40

                               ⇒ 160 \neq  200

                    ∴  2 : 5 : : 40 : 80 are not in proportion

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