Question

Practice Set 1.5
1. The difference between two numbers is
13. Thrice the smaller number is less
by 1 than greater number. Then the
sum of the two numbers is
(A) 15 (B) 23 (C) 25 (D)
21​

Answer 1

Answer:

(C) 25

Step-by-step explanation:

let, small number =a

large number =b

now,b-a= 13....(1)

again, 3a=b-1

or, b-3a=1....(2)

from (1)-(2)

2a=12

so, a=6

from(1)

b= 13+6=19

here, a+b=19+6=25