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Singapore math
2/3 beads are red.
1/4 are yellow, the rest blue.
There are 42 more red beads than blue beads. How many beads altogether

Respuesta :

cheycheybabygirl01

Answer

The fraction of blue beads is 1 - 2/3 - 1/4 = 1/12  

If the total number of beads is t then  

red - blue = 42  

2t/3 - t/12 = 42  

therefore  

7t/12 = 42  

therefore  

t = 12x42/7 = 72

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