Question

plse sove it for me frnd

Answer 1

hope it may help u...

Answer 2

let the highest prize given be x,
therefore, the prizes are:
x+(x-20)+(x-40)+(x-60)+(x-80)+(x-100)+(x-120)= 700
7x-420=700
7x=1120
x=160

prizes: 160,140,120,100,80,60,40

PS: you can use AP also, but i find this easier