Answered

Discover the answers you need at Westonci.ca, a dynamic Q&A platform where knowledge is shared freely by a community of experts. Get immediate and reliable solutions to your questions from a community of experienced experts on our Q&A platform. Our platform provides a seamless experience for finding reliable answers from a network of experienced professionals.

Class A has 25 pupils and class B has 28 pupils. Both classes sit the same maths test. The mean score for class A is 69. The mean score for both classes is 41. What is the mean score in the maths test for class B?

Sagot :

Answer:

13

Step-by-step explanation:

Mean would mean average, which in this case is [tex]\frac{x+y}{2}[/tex]

so your equation would look like [tex]\frac{69+x}{2}=41[/tex]

Next multiply both sides by to clear the fraction [tex]2*(\frac{69+x}{2})[/tex]

to get [tex]69+x=89[/tex]

Subtract 69 from both sides [tex]69+x=82\\-69 -69[/tex]

you get [tex]x = 13[/tex]

Thanks for using our service. We're always here to provide accurate and up-to-date answers to all your queries. Thank you for your visit. We're committed to providing you with the best information available. Return anytime for more. Westonci.ca is committed to providing accurate answers. Come back soon for more trustworthy information.