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help me please thank you

Help Me Please Thank You class=

Sagot :

taylonerikson

Answer:

b)30 boys c)1425 beats

Step-by-step explanation:

DWRead

Answer:

Step-by-step explanation:

b and g are the number of boys and girls, respectively.

b:g = 3:4

b = 3x, g = 4x

3x+4x = 70

x = 10

There are 30 boys.

:::::

(380 beats)/(4 minutes) = (380/4 beats)/minute = (95 beats)/minute

15 minutes × (95 beats)/minute = 1425 beats

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