Factory X produces units on the first day and its output rises by units each day

MATHEMATICS · Single correct · CBSE · Mathematics · Arithmetic Progressions · Arithmetic Progressions

Problem

Factory X produces

120

units on the first day and its output rises by

8

units each day. Factory Y produces

100

units on the first day and its output rises by

10

units each day. What is the difference between their total outputs after

15

days? (a)

75\text{ units}

(b)

90\text{ units}

(c)

110\text{ units}

(d)

180\text{ units}