What is the total number of pupils in the final year class ?
I. The number of boys in the final year class is twice as much as the number of girls in that class.
II. The sum of the ages of all the pupils in the class is 399 years and their average age is 19
years.
Answers
Answered by
2
the total number of pupils in the final year is 21 (may be)
xyz2005:
if total no. of pupils is 21 no. of girls is 7 nd no. of boys is 2×no.of girls i.e. 2×7=14
Answered by
0
Answer:
using only 2 we get.....
Similar questions