Question

pls answer the following...urgenttt​

Answer 1

Answer:

Step-by-step explanation:

middle value = 120

width = 20

let upper limit be x

let lower limit be y

now,

width= upper limit(x) - lower limit(y) .... (1)

and middle value = (upper limit + lower limit)/2 ....... (2)

writing (1) as an equation-> 20 = x - y

and (2) => x+y/2 = 120

=> x+y = 240 ....... (3)

adding (1) and (3)

2x = 260

x = 130

Therefore, upperlimit is 130.