Question

in a school week one fifth of the student take part in hundred metre race and one third take part in 200m Race the double of the difference of student taking part in 200 race and hundred metre race take part in 4multiply 100m race The rest 15 student enjoyed only .How many student in there playground​

Answer 1

Step-by-step explanation:

Given In a school week, one-fifth of the students take part in 100 m race and one-third take  part in 200 m Race the double of the difference of student taking part in 200 race and hundred metre race take part in 4 x 100 m race The rest 15 student enjoyed only .How many student in there playground​

• Let the number of students be x
• 1/5 of x take part in 100 m race
• 1/3 of x take part in 200 m race
• Also 2/3 – 2/5 = = 4/15 x take part in 400 m race
• Now sum of all students – x will be
• So x/5 + x/3 + 4x/ 15 + 15 = x
• 12 x / 15 + 15 = x
• 12 x + 225 = 15 x
• So x = 75

Therefore 75 students are in the playground

Reference link will be

https://brainly.in/question/15346614

Answer 2

Answer:

Step-by-step explanation:

Let the number of students be x

1/5 of x take part in 100 m race

1/3 of x take part in 200 m race

Also 2/3 – 2/5 = = 4/15 x take part in 400 m race

Now sum of all students – x will be

So x/5 + x/3 + 4x/ 15 + 15 = x

12 x / 15 + 15 = x

12 x + 225 = 15 x

So x = 75

Therefore 75 students are in the playground