Page 188 - Grade 10 C.Math

pbfx/0f 2
tn lbOPsf tYofª\sdf k;n ;ª\Vof / b}lgs laj|mL ;DaGwL ljj/0f lbOPsf] 5 . olb laj|mLsf]
dWos dfg (x) ?= 24625 eP c1ft k;nsf] ;ª\Vof kTtf nufpg'xf];\ .

laj|mL -?= xhf/df_ (X) 0-10 10-20 20-30 30-40 40-50

k;n ;ª\Vof (f) 5 25 ? 18 7
Curriculum Development Centre

;dfwfg

dfgf}F, c1ft af/Daf/tf = 'a'

ca, lbOPsf] tYofª\snfO{ tflnsdf k|:t't ubf{ M

X m f fm
0-10 5 5 25
10-20 15 25 375
20-30 25 a 25a
30-40 35 18 630
40-50 45 7 315
N = 55+a fm= (1345 + 25a)

f
ca, ;"qcg';f/

cyjf, [x sf] dfg xhf/df ePsfn] 1000 n] u'0fg ul/Psf]]

cyjf, 24625 (55 + a) = (1345 + 25a ) x 1000
cyjf, 1354375 + 24625a = 1345000 + 25000a

cyjf, 1354375 – 1345000 = 25000a – 24625a

cyjf, 9375 = 375a

cyjf, 

cyjf, 25 = a

c1ft af/Da/tf = 25

185 ul0ft, sIff – 10