Math Quiz II

1. If 3(x^2 + x) - 7 = x^2 + 2(4 + x^2), then x equals:

a) 5 b) 6 c) 9 d) 15

2. The area of a rectangle is 60 sq cm

and its perimeter is 34 sq cm. Its diagonal is:

a) 13 cm b) 14 cm c) 15 cm d) 16 cm

3. If 8a=9b, then the ratio a/9 : b/8 equals :

a) 64 : 81 b) 8 : 9 c) 1 : 1 d) 9 : 8

4. If angle BAD = angle ADB = 4x, angle ACB = x,
angle DBC = 45 deg, then angle ABC equals :

a) 45 deg b) 60 deg c) 90 deg d) 105 deg

5. A man earns a total of Rs x by working 3 days a week
for w weeks. His daily wage equals Rs :

a) 3xw b) w/3x c) x/3w d) xw/3

6. The value of (1/3 - 1/2) - 1 equals :

a) - 7/6 b) - 5/6 c) - 1/6 d) 7/6

7. The figure shows a square with semicircle ends.

If the diagonal of the square equals 6rt(2),

then the area of the figure is :

a) 16 + 9pi b) 36 + 9 pi c) 36 + 6pi d) 40 + 16pi

8. Rt(6^2 + 8^2 - 19) equals :

a) 7 b) 8 c) 9 d) 10

9. If the arithmetic mean of (x + 3) and (y + 5) is 64,
then the mean of x and y is :

a) 8 b) 9 c) 10 d) 12

10. If the mean of x, y and 16 is 12, then the mean of x and y equals :

a) 8 b) 9 c) 10 d) 12

----------Key----------

1. (a) 2. (a) 3. (c) 4. (d) 5. (c)

6. (a) 7. (b) 8. (c) 9. (c) 10. (c)