Question

A bag contains red and blue pens in the ratio 2:7 . there are 18 red pens in the bag . How many blue pens are in the bag ?

Answer 1

Step-by-step explanation:

LET THE RATIO OF PENS BE 2x and 3x.

GIVEN :

TOTAL NUMBER OF RED PENS IN THE BAG ARE : 18

NOW,

2x=18

x= 18/2

x=9

so,

blue pens in the bag are 7×9 =63

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Answer 2

Given: Ratio of pens in the bag is2:7

• let the common multiple be X
• then the ratio of red pens will be
• 2X=18 and blue pend is 7X=?

therefore, 2X= 18

X=9

7X=7×9=63

therefore, no.of blue pens is 63