Question

sia riya and arnav are playing with marbles .sia has twice as many marbles as riya and riya had twice as many marbles as arnav .they have a total of 70 .how many does each have

Answer 1

Let Arnav has X marbles
So Riya has 2 X marbles
And sia has 4 x marbles
According to the question
X+2x+4x=70
7x=70
x=10
So Arnav has 10 Marbles, Riya has 20 marbles and sia has 40 marbles

Answer 2

let arnav have X no. of marbles
then
Riya have. 2X marbles
and
Sia have 2(2X) marbles=4X marbles

they have a total no.of 70 marbles
then
ACCORDING TO THE QUESTION

X+2X+4X=70
7X=70
X=70/7
X=10

Hence
ARNAV HAVE 10 MARBLES
RIYA HAVE 2X MARBLES=2*10=20
SIA HAVE 4X MARBLES=4*10=40


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