Question

Answer these questions. Pls very urgent.

Answer 1

140

step by step explanation

Let the original number = x

Increased percentage =15%

Increased value =161

Original value (100+increased percentage)/100=increased value

x[(100+15)/100]=161

x×(115/100)=161

x=(161×100)/115

x=(23×7×5×20)/(23×5)

After cancellation

x=140

Therefore

Original value=x=140

240

step by step explanation

Let the number be x ; then

x - 20% of x = 192

x - (20/100)x = 192

x-(1/5)x = 192

(5x-1x) = 960

4x = 960

x = 240

band which is 72 cm long  

90-72=18

100+18=118

72/90*100

36/45*100

12/15*100=12000÷15=800

800÷2=400÷2=200÷2=100÷2=50÷2=25

hope it will help