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Anit [1.1K]
2 years ago
10

Alex and Freddy collect stamps. The number of stamps in Alex’s collection is in ratio 3:5 to the number of stamps in Freddy’s co

llection. If Freddy gives Alex 10 stamps, the ratio will change to 7:9. How many stamps are in both collections together?
Mathematics
1 answer:
Tems11 [23]2 years ago
4 0
Suppose Alex has 3x stamps, Freddy has 5x stamps. After Freddy gives Alex 10 stamps, Alex has 3x+10 while Freddy has 5x-10
the new ratio is 7 to 9, so we have the equation: (3x+10)/(5x-10)=7/9
9(3x+10)=7(5x-10)
27x+90=35x-70
160=8x
x=20
So Alex has 3*20=60 stamps while Freddy has 5*20=100. Together they have 160
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2 years ago
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3 years ago
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lidiya [134]

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3 years ago
A bus has velocity 20 m/s towards east and another bus has velocity 15 m/s in west direction. If they start to move from a point
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Answer:

<em>The first bus has covered 2,400 m and the second bus has covered 1,800 m. They are separated by 4,200 m</em>

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6 0
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Hope it helps ⚜

4 0
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