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zaharov [31]
3 years ago
8

In one grade of 150150 students, the ratio of boys to girls is 2 : 3 . How many boys are in that grade?

Mathematics
1 answer:
Serjik [45]3 years ago
4 0
2 + 3 =5

150/5=30
 
30 x 2 is 60

There are 60 boys 

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Aliun [14]

Answer:

The value of the snack bar is $ 2 and that of the magazine subscription is 25 $

Step-by-step explanation:

We have a system of two equations and two unknowns, which would be the following:

let "x" be the cost of the snack bar

Let "y" be the cost of the magazine subscription

16 * x + 4 * y = 132

20 * x + 6 * y = 190 => y = (190 - 20 * x) / 6

replacing:

16 * x + 4 * (190 - 20 * x) / 6 = 132

16 * x + 126.66 - 13.33 * x = 132

2.66 * x = 132 - 126.66

x = 5.34 / 2.66

x = 2

for "y":

y = (190 - 20 * 2) / 6

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neonofarm [45]

Answer:

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Step-by-step explanation:

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6-b

Step-by-step explanation:

I hope this helps, and have a great day! :D

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