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If 5: a 20 : 28 , then a , is ...

If `5: a 20 : 28 ,` then `a` , is equal to `4` b. `6` c. `7` d. 8

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  5. The value of x where x :2 1/3 21 : 50 is 1 1/(49) b. 1 1/(50) c....

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  6. If (x+1):8=3. 75:7 , then the value of x is

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  11. The ratio 4^(3. 5):2^5 is the same as 2:1 b. 4:1 c. 7:5 d. 7: 10

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