Question

Devin sent a total of 20 texts and emails on Monday. The number of texts was one less than twice the number of emails. Find the number of emails Devin sent

Answer 1

21 mails

Explanation:

Let there are x no of texts and y no of emails.

Condition 1,

x+y = 20 ...(1)

Condition,

x=2y-1 ...(2)

Put the value of x from equation (2) in (1). So,

(2y-1)+y = 20

Taking like terms together,

2y-y=20+1

y=21

So, Devin sent 21 mails,.