In a 100-meter dash, A can give B 10 metres and C 28 metres. B can give C in the same race:
A. 18 m
B. 20 m
C. 27 m
D. 9 m
Answer:B
In a 100-meter dash, A can give B 10 metres and C 28 metres. B can give C in the same race:
A. 18 m B. 20 m C. 27 m D. 9 m
Explanation: 100:90 is the ratio of A to B.The ratio of A to C is 100:72.90/100 x 100/72 = 90/72 = B/A x A/C = B/A x A/C = B/A x A/C = B/A x A/C = 90/100 x 100/72 = 90/72,C runs 72 metres when B runs 90 metres.When B runs 100 metres, C runs 72 x 100/90 metres = 80 metres.C can receive 20 m from B.