Question

a bag contains 120 marbles. some are red and the rest are black. there are 19 red marbles every for black marble.how many red marbles are in the bag

Answer 1

Answer:

95

Step-by-step explanation:

there are 19 red after every four black19+19+19+19+19=95 red

4+4+4+4+5=25black

Answer 2

There are 114 red marbles in the bag.

Explanation:

Let x = Number of red marbles .

y= Number of black marbles

Given : A bag contains 120 marbles.

i.e. $x+y=120$     (1)

There are 19 red marbles every for black marble.

$x=19y$   (2)

Put value of x in (1) , we get

$19y+y=120$  

$20y=120$  

$y=\dfrac{120}{20}=6$  

Put y= 6 in (2) , we get

$x=19(6)=114$  

Hence, there are 114 red marbles in the bag.

# Learn more :

A bag contains 70 marbles, some red and some green. THe ratio of red marbles to green ones is 2:5. How many red marbles are there?

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