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Tema [17]
2 years ago
7

Elevii clasei a IV-a au fost la patinoar. Stiind ca numarul baietilor reprezinta jumatate plus 3 din numarul copiilor si ca numa

rul fetelor este 10, afla cati copii au fost la patinoar.
Mathematics
1 answer:
Shalnov [3]2 years ago
7 0

Step-by-step explanation:

Fie x numărul de copii

f = 10 =\:fete

b\:=\:\frac{x}{2}\:+\:3

f\:+\:b\:=\:x

10\:+\:\frac{x}{2}\:+\:3\:=\:x

20\:+\:x\:+\:6\:=\:2x

x\:=\:26\:copii\:au\:fost\:la\:patinoar

b=\frac{26}{2}+\:3

b\:=\:16\:baieti

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Anastaziya [24]

Answer:

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Step-by-step explanation:

Here, given:

40% of slacks in her closet  = 6 pairs

Let us assume the total pants in her closet = m

So, according to the given data:

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\implies \frac{40}{100}  \times m = 6\\\implies m = 6 \times \frac{100}{4}  = 15

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