400 people participated in 100 m running race 35% were girls and 20% of the girls failed to reach the destination. If 75% of the children completed the race find the number of boys who completed race

• 188 boys completed the race
  
• 9 years agoHelpfull: Yes(4) No(1)
• total
  boy+girls=400
  total completed = 400 x 75/100 = 300 (children = boys + girls)
  number of girls = 400 x 35/100= 140
  completed girls = 140 - (140 x 20/100)= 112
  completed boys = 300 - 112 = 188
• 9 years agoHelpfull: Yes(1) No(0)
• total children=400
  total completed = 400 x 75/100 = 300 (children = boys + girls)
  number of girls = 400 x 35/100= 140
  fail girls = 140*20/100=28
  girls children completed the race= 140-28=112
  completed boys = 300 - 112 = 188
• 9 years agoHelpfull: Yes(1) No(0)