Question

Sara and Kim togetherhave 15 pencils Sara has 9 pencils mark Kim togetherhave 10 pencils how many pencils does mark have

Answer 1

Answer: 1

Step-by-step explanation:

Let the pencil of Sara be = a

And that of kim = b

Pencil of mark =c

a + b= 15

a =9

.°. b = 11

b+ c= 10

b = 11

.°. C=1