Old Exam Papers June 2012 (Set 2)

investing Rs. 3,600, 3,780 and 4,140 and at the end
of year they get the profit of Rs. 3,840, then find the
profit of A, B and C. 5
A, B rFkk C Øe'k% 3,600, 3,780 vkSj 4,140 #i;s yxkdj
,d f[kykSuksa dh nqdku izkjEHk djrs gSaA ;fn o"kZ ds vUr
esa 3,840 #i;s dk ykHk gqvk gks rks A, B, C dk ykHkka'k
Kkr dhft;sA 5
5. (a) If cost price of 20 mangoes be equal to the selling
price of 12 mangoes, find the profit percentage. 5
;fn 20 vke dk Ø; ewY; 12 vke ds foØ; ewY; ds
cjkcj gS] rks ykHk izfr'kr Kkr dhft;sA 5
(b) If x 1, y 3 , find the value of the following
expression :
2
4x 3x 7
2
y 3y 6
;fn x 1, y 3 gks] rks fuEufyf[kr O;atd dk eku
Kkr dhft;s %
2
4x 3x 7
2
y 3y 6
4000 4 EMT
5
5
9. (a) If the sides of the triangle are 15 cm, 16 cm and
17 cm, then find the area of the triangle. 5
;fn ,d f=Hkqt dh Hkqtk,¡ Øe'k% 15 lseh-] 16 lseh-]
rFkk 17 lseh- gSa] bl f=Hkqt dk {ks=Qy Kkr
dhft;sA 5
b g and
(b) Find the distance between the points A 2, 3
b g. 5
B 1, 2
fcUnqvksa Ab2 , 3g
rFkk Bb1 , 2g
ds e/; nwjh Kkr
dhft;sA 5
10. (a) Find the equation of the straight line joining (1, 2)
and (3, 4). 5
fcUnqvksa (1, 2) rFkk (3, 4) dks feykus okyh js[kk dk
lehdj.k Kkr dhft;sA 5
dy
3 (b) If y a tanx b cosec x cx , then find
dx . 5
dy
3 ;fn y a tanx b cosec x cx , rks
dx Kkr
dhft;sA 5
EMT 7 PTO