Question

42. What is the strength of the school, if 25% boys participated in sports
competition, 45% boys in cultural programme and 252 boys remained in the
school?​

Answer 1

Answer:

percentage of boys in sports and cultural program = 25%+45% = 70 %

100 % -70% = 30%

boys remained = 252

total strength × percentage/100 = no. of boys

x * 30/100 = 252

x * 3/10 = 252

x = 252×10/3

x = 2520/3

total strength = 840

please mark as brainliest answer and follow me

Answer 2

Answer:

840

Step-by-step explanation:

Total percent of participation - 25% + 45% = 70 %

Total percent of participation - 25% + 45% = 70 %100 - 70 = 30%

Total percent of participation - 25% + 45% = 70 %100 - 70 = 30%Total strength × 30/100 = 252

Let x be the total strength

Therefore,

x × 30/100 = 252

= x × 3/10 = 252

x = 252 × 10/3

x = 840