Mrs. Agrawal bought two boxes of pens. Both boxes contained a total of 900 pens. The bigger box contained 120 more pens than the smaller box. How many pens were there in the smaller box?
A400
B 390
C320
D 350
Mrs. Agrawal bought two boxes of pens. Both boxes contained a total of 900 pens. The bigger box contained 120 more pens than the smaller box. How many pens were there in the smaller box?
A400
B 390
C320
D 350