Follow BODMAS rule to solve this question, as per the order given below,
Step–1: Parts of an equation enclosed in 'Brackets' must be solved first, and in the bracket,
Step–2: Any mathematical 'Of' or 'Exponent' must be solved next,
Step–3: Next, the parts of the equation that contain 'Division' and 'Multiplication' are calculated,
Step–4: Last but not least, the parts of the equation that contain 'Addition' and 'Subtraction' should be calculated.
– 3 = 2.5 × ?
⇒
– 3 = 2.5 × ?
⇒
- 3 = 2.5 × ?
⇒ ? =
⇒ ? = 30.8