Question

1- 75: x :: 5: 8 find x

2-. If A:B=6:7, B:C=8:9. Then find A:C.

3- The ratio between two numbers 3: 5 . If each number is increased by 4 , the ratio becomes 2:3. Find the numbers.


4-. Divide rupee 72 in the ratio 4:5.

5-. The ratio between two numbers 3:7 . If their LCM is 210. Find the numbers.
TASK FOR MATH LOVER SOLVE IF FRIENDS..........
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Answer 1

Answer:

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All questions are answered pls check

2. A:B=6:7,B:c=8:9

then A/B x B/C = A/C

=6/7 X 8/9=16/21

therefore A/C=16/21

the answer is 16:21

5. Let the 2 numbers be 3x and 7x and HCF be x.

Using formula, a×b = LCM × HCF

3x × 7x = 210 × x

21x² = 210x

x = 210/21

x = 10

a = 3x = 3×10 = 30

b = 7x = 4×10 = 40

HCF = x = 10

Hope this helps :)

Answer 2

Answer:

120

Step-by-step explanation:

1-75:x::5:8

by the property of mean- product of extreams = product of means

here exteams are 75 and 8

here means are x and 5

75×8=600

x×5=some thing

here exteams=means

so,

75×8=x×5

600=x×5

x=600÷5

=120