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

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
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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

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