Page 136 - Grade 10 C.Math

pbfx/0f 3
12 ls=u|f= cfn' / 10 ls=u|f= Kofhsf] d"No ?= 640 k5{ . To;} u/L 2 ls=u|f= cfn' /
3 ls=u|f= Kofhsf] d"No ?= 160 k5{ . 1 ls=u|f= cfn' / Kofhsf] 5'6\6f 5'6\6} d"No slt k5{ <
kTtf nufpg'xf];\ .

;dfwfg
Curriculum Development Centre
oxfF 1 ls=u|f= cfn'sf] d"No ?= x / Kofhsf] d"No ?= y dfgf}F

k|Zgcg';f/ 12x + 10y = 640 ........... (i)
2x + 3y = 160 ............ (ii)

;dLs/0f (ii) nfO{ 6 n] u'0fg u/L ;dLs/0f (i) af6 36fpFbf
12x + 10y = 640 ......... (i)

12x + 18y = 960 ...... (ii)
(—) (—) (—)
– 8y = -320

cyjf,  = 40

k]ml/ y sf] dfg ;dLs/0f (i) df /fVbf

12x + 10y = 640

cyjf, 12x + 10 x 40 = 640

cyjf, 12x + 400 = 640

cyjf, 12x = 640 - 400
cyjf, 12x = 240

cyjf, x 
cyjf, x = 20

To;}n] 1 ls=u|f= cfn'sf] d"No ?= 20 / 1 ls=u|f= Kofhsf] d"No ?= 40 k5{ .

pbf/x0f 4

15 jif{cl3 afa'sf] pd]/ 5f]/Lsf] pd]/eGbf rf/ u'0ff lyof] . olb casf] 5 jif{kl5 afa'sf] pd]/
5f]/Lsf] pd]/sf] b'O{ u'0ff x'g] 5 eg] ltgLx¿sf] xfnsf] pd]/ kTtf nufpg'xf];\ .

;dfwfg
dfgf}F, afa'sf] xfnsf] pd]/ 'x' jif{ / 5f]/Lsf] xfnsf] pd]/ 'y' jif{ 5 .

133 ul0ft, sIff – 10