Question

A bag had 90 marbles. John came and took 38 away and amit put in some more marbles in the bag. If the number of marbles in the bag now are 15 mote than the number that was in the bag initially, find how many marbles amit had put in the bag ​

Answer 1

bag containing 90 marbles....

90 -38 = 52left

some marbles are added to bag

present marbles are 105

90-38 = 52 ,52+ x = 105,

x = 105-52

x = 53... (some marbles)

Answer 2

$\mathfrak{ANSWER}$

Original number of marbles in the bag - 90

Number of marbles taken by John - 38

Now, the number of marbles left in the bag are - 90-38 = 52

Let number of marbles added by Amit = x

So, According to the question,

52 + x = 90 + 15

52 + x = 105

x = 105 - 52

x = 53

Hence, Amit had added 53 marbles

VERIFICATION

52 + 53 = 90 +15

105 = 105