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vikas is three years older than Deepika.Six years ago,Vikas's age was four times Deepika's age.Find the ages of Deepika and Vikas.

2007-01-17 02:43:53 · 19 answers · asked by Anonymous in Science & Mathematics Mathematics

19 answers

T = 200 + C------------------(1)
2T + 3C = 1400-------------(2)

replacing T in (2) by its value from (1)
2(200+C) + 3C =1400
400 + 2C + 3C = 1400
5C = 1000 => C = 200
T = 400

V = 3 + D-------------------(1)
(V-6)=4(D-6)---------------(2)

replacing V in (2) by its value from (1)
(3 + D - 6) = 4(D-6)
D- 3 = 4D - 24
3D = 21 => D = 7 and V = 10

2007-01-17 02:50:59 · answer #1 · answered by Anonymous · 0 0

T=Tables C=Chairs

T=C+200
2T+3C=1400

2(C+200)+ 3(200)=1400
2C+400+600=1400
2C=400
C=200
T=C+200 T=200+200
T=400

Chairs=200 Tables= 400

2007-01-17 10:04:54 · answer #2 · answered by Anonymous · 0 0

The tables are 400, the chairs 200.

(2 x 400) + (3 x 200) = 1400

Deepika is 7, Vikas is 10.

2007-01-17 02:48:40 · answer #3 · answered by Anonymous · 0 0

Ans 1>
cost of Table = cost of chair + Rs. 200

t= c + 200

two tables + three chairs costs Rs. 1400

2t + 3c = 1400

2 * ( c + 200 ) + 3c = 1400

5c + 400 = 1400

5c =1000

c = 200
t = 200 + 200 = 400

cost of one chair 200
cost of one table 200


Ans 2>

Vikas is three years older them Deepika so

v = 3 + d

Six years ago

(v-6) = 4 * (d-6)

(3+d-6)=4 * (d-6)

d-3 = 4d-24

3d = 21

d = 7

v = 10

Present Age 10, 9

2007-01-17 21:10:34 · answer #4 · answered by coollovablechap 1 · 0 0

let the chair's cost be "x"
and let the table's cost be "x+200"

So,therefore,

3(x) + 2(x+200)=1400
3x+2x+400=1400
5x=1000,(taking 400 on the other side)
so therefore,x=200(dividing 1000 by 5)

so there fore,chair's cost = x = Rs.200
and table's cost= x+200=200+200=Rs.400

2nd question:
v=vikas and d=deepika
v=d+3
(v-6)=4(d-6)
as we know v=d+3
so therefore
d+3-6=4d-24
d-3=4d-24
21=3d
so therefore , d=deepika=7(21/3)
and v=vikas=d+3=7+3=10
so ages of vikas and deepika are
deepika=7 years
vikas=10 years.

2007-01-17 12:08:07 · answer #5 · answered by Anonymous · 0 0

T = 200 +C
2T +3C=1400
T-C=200
Solving Eqn 2 and 3
3T+2C=1600
Solving We have T=400 and C=200

Vikas =x
Deepika =x-3
Six years ago Vikas's age=x-6
Six years ago Deepika's age=x-3-6
By condition
x-6=4(x-3-6)
x-6=4(x-9)
-3x=-30
x=10
Therefore Deepika's age =x-3=7

2007-01-17 03:23:03 · answer #6 · answered by navin p 2 · 0 0

1) chair + 200 = table
we can multiplicate this equation with 3

3 chairs + 600 = 3 tables


3 chairs - 3 tables = -600
-
3 chairs +2 tables = 1400

-5tables = -2000
tables = -2000/(-5) = 400 Rs
& chairs = 400 - 200= 200 Rs

2) first equation :
vidkas = 3 + deepika
vidkas - deepka = 3

second equation:
vidkas - 6 = 4 (deepka-6)
vidka = 4 deepka -24 + 6
vidka - 4 deepka = -18

lets substract these 2 equations:

vidkas - deepka = 3
vidka - 4deepka = -18

3 deepka = 21
deepka = 7 years

let's replace deepka = 7 in the first equation to find vidka:

vidka - 7 = 3
vidka = 10years

2007-01-17 03:05:51 · answer #7 · answered by loulou 2 · 0 0

Table = t
chair =c

c+200=t
2t + 3c =1400
2(c+200) + 3c=1400
2c+400 +3c =1400
5c = 1000
c =200

200 + 200 =400
t= 400

Deepika = d
Vikas = v

d +3 =v
v-6 =4(d-6)
d + 3 -6 = 4d -24
21 =3d
d = 7
7+ 3 =10
10 =v

So in conclusion: Table =400, Chair =200
Deepika = 7, Vikas =10

There You Go!

2007-01-17 02:56:19 · answer #8 · answered by Anonymous · 0 0

It t is table and c is chair then t-c = 200.
2t + 3c = 1400. Solve these 2 eqautions simultaneously to get the answer t=400 and c = 200

V = vikas, d = deepika
v-d = 3
v-6 = 4(d-6)
Therefore v = 10 and d = 7

2007-01-17 02:51:51 · answer #9 · answered by edge 3 · 0 0

1.cost of table=rs 400
chair=rs 200

2. vikas age. = 9year
deepika age = 6 year

2007-01-17 03:04:13 · answer #10 · answered by Rajesh M 2 · 0 0

Cost of Chair = 200Rs
Table = 400Rs


Age of Vikas = 10years
Deepika = 7years

2007-01-17 19:02:41 · answer #11 · answered by Anjaneya 2 · 0 0

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