The perimeter of a rectangle is 200 inches. If the length of the rectangle is (x + 5) inches, and the width is (3x – 5) inches. Find the value of x. P = 2l + 2w Enter your answer as an integer or decimal.

25

Step-by-step explanation:

1) the rule is P=2(l+w);

2) according to the rule above: P=2(x+5+3x-5); ⇔ P=8x;

3) if according to the condition P=200, then 8x=200; ⇒ x=25.

36 girls

step-by-step explanation:

the 48 boys is 4 parts of the ratio

divide 48 by 4 to obtain one part of the ratio

= 12 ← 1 part of the ratio

3 parts = 3 × 12 = 36 ← number of girls

-9

step-by-step explanation: