In a 100 m race, A can give B 10 m and C 28 m. In the same race B can give C:18 m20 m27 m9 mNone
Question
In a 100 m race, A can give B 10 m and C 28 m. In the same race B can give C:18 m20 m27 m9 mNone
Solution
In the 100 m race, A can give B a 10 m lead, which means A runs 100 m while B runs 90 m.
Similarly, A can give C a 28 m lead, which means A runs 100 m while C runs 72 m.
So, when B runs 90 m, C runs 72 m.
Now, we need to find out how much lead B can give C.
Let's set up a proportion to solve this:
90/72 = 100/x
Cross-multiplying gives us:
90x = 7200
Solving for x gives us:
x = 7200 / 90
x = 80
So, B can give C a 20 m lead in a 100 m race.
Therefore, the correct answer is 20 m.
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