CTET Solved Paper - UTET September 2013 Paper2
- Option : B
- Explanation : Let the number of hens and goats be x and y, respectively.
x + y = 77 .......(i)
and 2x + 4y = 248 ........(ii)
Solving the above two equations, we get
y = 47
and x = 30
77. A semi-circular shaped window has diameter 49 cm. Its perimeter will be (π = 22/7 )
- Option : B
- Explanation : (B) Diameter of semi-circle = 49cm
Perimeter = πr+d
= 22/7 × 49/2 + 49
= 77 + 49 = 126 cm
78. In given figure, the value of x0+ y0 will be
- Option : A
- Explanation : (A) Here, ∠ACD = 400 + x0
[exterior angle theorem]
and y0 + ∠ACD + 400 = 1800
⇒ y0 + 400 + x0 + 400 = 1800
⇒ x0 + y0 = 1800 - 800 = 1000
