1.

15 ÷ 12.5 × 35 + 42.8 × 2.5 = ?2 + 1021). 82). 63). 7.54). 5.2

Answer»

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.

Given expression is,

15 ÷ 12.5 × 35 + 42.8 × 2.5 = ?2 + 102

⇒ (15 ÷ 12.5) × 35 + 42.8 × 2.5 = ?2 + 102

⇒ (1.2 × 35) + (42.8 × 2.5) = ?2 + 102

⇒ 42 + 107 = ?2 + 102

⇒ 149 – 100 = ?2

⇒ ?2 = 49

∴ ? = 7


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