Respuesta :
Assuming there are only 42 yellow balls in the bag. The total number of balls in the bag is 90 balls.
Total number of balls
Formulate
42×(3+5+7)÷7
Reduce the fraction
42÷7×(3+5+7)
6×(3+5+7)
Hence:
Total number of balls=6×15
Total number of balls=90 balls
Inconclusion the total number of balls in the bag is 90 balls.
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