Respuesta :

35% off means that now it costs 100%-35%=65% of the original price

£78 ---- 65%
x------100%

x=78*100/65=120
£

or 
part/whole=0.65
78/whole=0.65
whole =78/0.65 =120 
£ 

The original price of the phone is £120.

Given that,

  • There is 35% off.
  • After applying the off, the phone is now only £78.

Based on the above information, the real price of the phone is

= £78 × 1 ÷ (1 - 0.35)

= £78 ÷ 0.65

= £120

Therefore we can conclude that the original price of the phone is £120.

Learn more about the price here: brainly.com/question/19091385