P6 PowerMath Lesson 9 Page 11 The ratio of the number of boys and girls who attended an exhibition was 3:7. After 60 boys and 240 girls left the exhibition, the ratio became 2:3. How many boys and girls were there at the exhibition at first?
P6 PowerMath Lesson 9 Page 11 The ratio of the number of boys and girls who attended an exhibition was 3:7. After 60 boys and 240 girls left the exhibition, the ratio became 2:3. How many boys and girls were there at the exhibition at first?
Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter7: Applying Fractions
Section7.1: Ratios
Problem 25WE
Question
Transcribed Image Text:4
P6 PowerMath Lesson 9
Page 11
The ratio of the number of boys and girls who attended an exhibition was 3:7.
After 60 boys and 240 girls left the exhibition, the ratio became 2:3.
How many boys and girls were there at the exhibition at first?
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