1.

(28.20 × 7.91) ÷ (8.01% of 700) = 70.02 × 1.89 ÷ ?1). 152). 353). 554). 52

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,

⇒ (28.20 × 7.91) ÷ (8.01% of 700) = 70.02 × 1.89 ÷ ?

We can write the given values as:

⇒ 28.20 ≈28 and 7.91 ≈ 8 and 8.01 ≈ 8

⇒ 70.02 ≈ 70 and 1.89 ≈ 9

Then,

⇒ (28 × 8) ÷ (8% of 700) = 70 × 2 ÷ ?

⇒ (224) ÷ [(8/100) × 700] = 70 × 2 ÷ ?

⇒ (224) ÷ (56) = 70 × 2 ÷ ?

⇒ 4 = 70 × 2 ÷ ?

⇒ 4/70 = 2/?

⇒ ? × 4 = 2 × 70

⇒ ? = 140/4

∴ ? ≈ 35


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