d 50 g: 2 kg:
7 State which of the following are in proportion.
10:30 :: 15:45
b 8: 40 :: 5:30
c 5:20 p :: 75: 3
- A
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Step-by-step explanation:
part a. 10:30::15:45(method 1)
product of extremes = product of means
10×45=30×15
450=450
thus they are in propotion
8:40::5:30(method 2)
8/40=5/30
cross multiplication
40×5=30×8
200=240
thus they are not in propotion
solve next by any method of above
5:20::75:3
product of extremes=product of means
5×3=20×75
15=1500
thus they are not in propotion
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