Let A, B, C, D, and E represent the number of cards each person has.
Statement 1: "If you give me three cards, you will have as many as E has."
B - 3 = E (Equation 1)
Statement 2: "If I give you three cards, you will have as many as D has."
B + 3 = D (Equation 2)
Statement 3: "A and B together have 10 cards more than what D and E together have."
A + B = D + E + 10 (Equation 3)
Statement 4: "B has two cards more than what C has."
B = C + 2 (Equation 4)
Statement 5: "The total number of cards is 133."
A + B + C + D + E = 133 (Equation 5)
From (Equation 1): E = B - 3
From (Equation 2): D = B + 3
From (Equation 4): C = B - 2
Substitute into: A + B = (B + 3) + (B - 3) + 10
A + B = 2B + 10
A = B + 10
Substitute A = B + 10, C = B - 2, D = B + 3, and E = B - 3 into (Equation 5):
(B + 10) + B + (B - 2) + (B + 3) + (B - 3) = 133
Simplify:
5B + 8 = 133
5B = 125
B = 25
The number of cards D has is 25.
The diagram below shows a river system consisting of 7 segments, marked P, Q, R, S, T, U, and V. It splits the land into 5 zones, marked Z1, Z2, Z3, Z4, and Z5. We need to connect these zones using the least number of bridges. Out of the following options, which one is correct? Note:
In the given figure, PQRS is a square of side 2 cm, and PLMN is a rectangle. The corner \( L \) of the rectangle is on the side \( QR \). Side \( MN \) of the rectangle passes through the corner \( S \) of the square. What is the area (in cm\(^2\)) of the rectangle PLMN? Note: