In a 200m race, A run at the speed 8m/sec.He gives B a start 20m and still beats him by 5 sec.what speed of B.
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he was 5 sec after A won the race
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In a 100 m race, A can give B 10 m and C 28 m. In the same race B can give C:
A.18 mB.20 mC.27 mD.9 m
Answer: Option B
Explanation:
A : B = 100 : 90.
A : C = 100 : 72.
B : C =BxA=90x100=90.AC1007272
When B runs 90 m, C runs 72 m.
When B runs 100 m, C runs72x 100m= 80 m.90
 B can give C 20 m.
A.18 mB.20 mC.27 mD.9 m
Answer: Option B
Explanation:
A : B = 100 : 90.
A : C = 100 : 72.
B : C =BxA=90x100=90.AC1007272
When B runs 90 m, C runs 72 m.
When B runs 100 m, C runs72x 100m= 80 m.90
 B can give C 20 m.
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