Fill in the blanks.
Rotation turns an object about a __P__ point. The fixed point is the centre of __Q__ . The angle by which the object rotates is the __R__.
P | Q | R | |
A | fixed | rotation | angle of rotation |
B | variable | rotation | central angle |
C | fixed | angle of rotation | rotation |
D | variable | rotation | angle of rotation |
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In a quiz, 40 prizes consisting of 1st and 2nd prizes only are to be given. 1st and 2nd prizes are worth ₹ 2500 and ₹ 1500, respectively. If the total prize money is ₹ 85,000, then
(i) the equation formed is
(ii) the number of 1st prizes are
(iii) the number of 2nd prizes are
-----------------(i) | (ii) | (iii) | |
A | 2500x + 1500(40 – x) = 85000 | 25 | 15 |
B | 2500x – 1500(40 – x) = 85000 | 36 | 4 |
C | 2500x × 1500(x – 40) = 85000 | 20 | 20 |
D | 2500x – 1500(x – 40) = 85000 | 15 | 25 |
explanation please