Ask Question
MathematicsMathematics
28 May, 08:33

The ratio of boys to girls in Class A is 3 to 4. The ratio of boys to girls in Class B is 4 to 5. If the two classes were combined, the ratio of boys to girls in the combined class would be 17 to 22. If Class A has one more boy and two more girls than class B, how many girls are in Class A?

+1
Answers (1)
  1. 28 May, 09:03
    0
    Step-by-step explanation:

    Let B be number of boys present in Class A

    Let G be number of girls present in Class B

    B/G = 3/4 - --> 4B-3G=0 (1)

    For class B

    B-1 / G-2 = 4/5

    5 (B-1) = 4 (G-2)

    5B - 4G=-3 (2)

    Solving equation 1 and 2

    20B - 15G=0

    20B-16G=-12

    G=12

    Number of girls in class A is 12
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “The ratio of boys to girls in Class A is 3 to 4. The ratio of boys to girls in Class B is 4 to 5. If the two classes were combined, the ...” in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers
You Might be Interested in
Whats the equivalent expression for 7 (2x + 9)
Answers (1)
Shannon's chair is 20 inches tall. How tall is it in centimeters? (The proportional relationship between inches and centimeters is 2.54 cm/1 in.) 7.87 cm 49 cm 50.8 cm 40 cm
Answers (1)
Find the measures of an interior angle and an exterior angle of a regular polygon with 8 sides.
Answers (1)
A percent is a ratio that compares a number to 10. True False
Answers (1)
You earn $20.00 per hour at your job. If you get a 10% raise at the end of each year, what will your hourly rate, h, be after 8 years? Use the equation h=C (1+r) ^t, where C is the beginning hourly rate, r is the growth rate, and t is time in years.
Answers (1)
New Questions in Mathematics
4 people can stain a deck in 2 days, how many people would be required to stain the deck in only 1 day?
Answers (2)
Y = x^2 - 8x + 15 line of symmetry
Answers (1)
Alma is considering buying her first home. The house she is interested in buying is priced at $150,000. Alma can put down a $20,000 payment, and she qualifies for a 30-year mortgage at 5%. What will her monthly mortgage payment be? A) $697.
Answers (2)
Find the next three terms of the sequence. -2, - 12, - 72, - 432 A - 1,728, - 6,912, - 27,648 B - 1,728, - 10,368, - 62,208 C - 2,592, - 10,368, - 41,472 D - 2,592, - 15,552, - 93,312
Answers (1)
Rachel jogged along a trail was1/4 of a mile long. She jogged along the trail 8 times. How many miles did Rachel jog?
Answers (2)
Home » Mathematics » The ratio of boys to girls in Class A is 3 to 4. The ratio of boys to girls in Class B is 4 to 5. If the two classes were combined, the ratio of boys to girls in the combined class would be 17 to 22.
Sign Up Forgot Password?