@bullseyes said:If S1 denotes sum of squares of sides of trapezium and S2 denotes sum of squares of diagonals, S1-S2 = 576 and length of longer parallel side is 50 cm then find length of shorter parallel side.
6.13 ?? :O
@bullseyes said:If S1 denotes sum of squares of sides of trapezium and S2 denotes sum of squares of diagonals, S1-S2 = 576 and length of longer parallel side is 50 cm then find length of shorter parallel side.
6.13 ??? 😲
@bullseyes said:If S1 denotes sum of squares of sides of trapezium and S2 denotes sum of squares of diagonals, S1-S2 = 576 and length of longer parallel side is 50 cm then find length of shorter parallel side.
Let one vertex be at origin and height be y, distance of smaller parallel side be D
A(0,0) B(50,0) C(x2,y) D(x1,y)
From ques
sigma side^2-sigma diag^2=576
50^2+ D^2+y^2_x1^2+(50-x2)^2+y^2-[(y^2+x2^2+(50-x1)^2+y^2)]=576
50^2+d^2-100(x2-x1)=576
d^2-100d+1924=0
d=74,26 ,can't be 74
D=26
A(0,0) B(50,0) C(x2,y) D(x1,y)
From ques
sigma side^2-sigma diag^2=576
50^2+ D^2+y^2_x1^2+(50-x2)^2+y^2-[(y^2+x2^2+(50-x1)^2+y^2)]=576
50^2+d^2-100(x2-x1)=576
d^2-100d+1924=0
d=74,26 ,can't be 74
D=26
Shorter parallel side = 26 cm.
yeh thread zinda hai na?
one qs after a long time :)
A invested Rs 25000 in 2 fixed deposits x and Y offering compound interest @6% and @8% pa resp. if the total interest incurred in 2 years thru both the bonds is 3518 the amt invested in X was?
12k
13500
15k
CBD
IIFT ka hai iss baar ka :)
@vijay_chandola , @Brooklyn
@sonamaries7 said:yeh thread zinda hai na? one qs after a long time A invested Rs 25000 in 2 fixed deposits x and Y offering compound interest @6% and @8% pa resp. if the total interest incurred in 2 years thru both the bonds is 3518 the amt invested in X was?12k1350015kCBDIIFT ka hai iss baar ka @vijay_chandola , @Brooklyn
15K 😁
@sonamaries7 said:yeh thread zinda hai na? one qs after a long time A invested Rs 25000 in 2 fixed deposits x and Y offering compound interest @6% and @8% pa resp. if the total interest incurred in 2 years thru both the bonds is 3518 the amt invested in X was?12k1350015kCBDIIFT ka hai iss baar ka @vijay_chandola , @Brooklyn
15000,wid options.
15k*.06=p
p+p*.06=k
10k*.06=p'
p'+p'*.06=k'
p'+p'*.06=k'
k+k'=3518
@sonamaries7 said:yeh thread zinda hai na? one qs after a long time A invested Rs 25000 in 2 fixed deposits x and Y offering compound interest @6% and @8% pa resp. if the total interest incurred in 2 years thru both the bonds is 3518 the amt invested in X was?12k1350015kCBDIIFT ka hai iss baar ka @vijay_chandola , @Brooklyn
Let x be invested in X and 25000-x in Y
x(1.06^2-1)+(25000-x)(1.08^2-1)=3518
x=15K
x=15K
@sonamaries7 said:yeh thread zinda hai na? one qs after a long time A invested Rs 25000 in 2 fixed deposits x and Y offering compound interest @6% and @8% pa resp. if the total interest incurred in 2 years thru both the bonds is 3518 the amt invested in X was?12k1350015kCBDIIFT ka hai iss baar ka @vijay_chandola , @Brooklyn
[1.06^2 - 1] * X^2 + [ 1.08^2 - 1] * (25000 - X) = 3518
=> 0.1236*X + 0.1664*(25000 - X) = 3518
=> 4160 - 3518 = 0.0428 X
Thus, X = 642/0.0428 = 15000 Rs. = 15k [ Option C ]
@sonamaries7 said:yeh thread zinda hai na? one qs after a long time A invested Rs 25000 in 2 fixed deposits x and Y offering compound interest @6% and @8% pa resp. if the total interest incurred in 2 years thru both the bonds is 3518 the amt invested in X was?12k1350015kCBDIIFT ka hai iss baar ka @vijay_chandola , @Brooklyn
{(1.06)^2-1}*x+ {(1.08)^2-1}*(25000-x)=3518
By solving, x=15000.
@Torque024 said:Let x be invested in X and 25000-x in Y x(1.06^2-1)+(25000-x)(1.08^2-1)=3518x=15K
any trick for fast calc in these type? or else..
@sujamait said:any trick for fast calc in these type? or else..
Arrey Suja Sir - 2 minutes ka calculation hai maximum. :D
zinda hai yeh thread..testing ho gyi 
:) chalo 1 aur
The probablity that in a household LPG will last 60 days or more is 0.8 and that it will last at most 90 days is 0.6. THe prob that the LPG will last 60 to 90 is:
0.4
0.5
0.75
none
@sonamaries7 said:yeh thread zinda hai na? one qs after a long time A invested Rs 25000 in 2 fixed deposits x and Y offering compound interest @6% and @8% pa resp. if the total interest incurred in 2 years thru both the bonds is 3518 the amt invested in X was?12k1350015kCBDIIFT ka hai iss baar ka @vijay_chandola , @Brooklyn
15k
@sonamaries7 said:zinda hai yeh thread..testing ho gyi chalo 1 aur The probablity that in a household LPG will last 60 days or more is 0.8 and that it will last at most 90 days is 0.6. THe prob that the LPG will last 60 to 90 is:0.40.50.75none
less than 60=0.2
at most 90=0.6
60 to 90=0.6-0.2=0.4
at most 90=0.6
60 to 90=0.6-0.2=0.4
@sonamaries7 said:zinda hai yeh thread..testing ho gyi chalo 1 aur The probablity that in a household LPG will last 60 days or more is 0.8 and that it will last at most 90 days is 0.6. THe prob that the LPG will last 60 to 90 is:0.40.50.75none
0.4...iift ka Q hai
@sonamaries7 said:zinda hai yeh thread..testing ho gyi chalo 1 aur The probablity that in a household LPG will last 60 days or more is 0.8 and that it will last at most 90 days is 0.6. THe prob that the LPG will last 60 to 90 is:0.40.50.75none
0.4
@Torque024 said:less than 60=0.2 at most 90=0.6 60 to 90=0.6-0.2=0.4
^^^
aisa he kuch..dunno if it's right way.
Estallar12 galti ho jati hai yar exam me..calc me.
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