Question

7) IN A SCHOOL , 40% OF THE TOTAL STUDENTS ARE GIRLS. IF THERE ARE 60 BOYS THEN THE NUMBER OF GIRLS WILL BE:
40
50
45
60​

Answer 1

Answer:

40 girls

Explanation:

Let the total number of students be X

40/100 x X = 2X/5

X = 2X/5 +60

or, 2X+300/5

or, 5X= 2X +300

or, 5X-2X =300

or, 3X= 300

or, X = 300/3= 100

The total number of students = 100

Therefore, total number of girls = 100 - 60= 40 girls