f average marks for agroup of 30 girls is 80 , a group of boys is 70 and combined average is 76, then howmany boys are in the group ?(a) 21(b) 20(c) 22(d) 19
Question
Solution 1
Let's solve the problem step by step:
Step 1: Let's assume the number of boys in the group is 'x'.
Step 2: The average marks for the group of girls is given as 80. Since there are 30 girls, the total marks for the girls would be 80 * 30 = 2400.
Step 3: The average marks for the group of boys is g Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solve study prob
Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solve study problem.
Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solve study problem.
Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solve study problem.
Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solv
Similar Questions
f average marks for agroup of 30 girls is 80 , a group of boys is 70 and combined average is 76, then howmany boys are in the group ?(a) 21(b) 20(c) 22(d) 19
In a class, 70% of the students are boys. 80% of the boys and 50% of the girls love sports. What is the percentage of students who love sports?
There are boys and girls in a club in the ratio 19:9There are 20 more boys than girls.How many girls are there?
Find the mode of the following data set:19, 21, 18, 17, 18, 22, 12, 46 Group of answer choices191817no mode
In a class, 55% of the students are boys. 60% of the boys and 80% of the girls love singing. What is the percentage of students who love singing?%