Advertisements
Advertisements
प्रश्न
The mean weight of 5 students is 47 kg. If four of them weigh 44 kg, 45 kg, 47 kg and 49 kg. Find the weight of the fifth student.
योग
Advertisements
उत्तर
The mean weight of 5 students is 47 kg.
Total weight of all students = mean × number of students
= 47 × 5
= 235 kg
Total weight of the first 4 students are:
44 + 45 + 47 + 49 = 185 kg
Weight of the fifth student = Total weight of all students − Total weight of the first 4 students
= 235 − 185
= 50 kg
∴ The weight of the fifth student is 50 kg.
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
