Question

Ali is 7kg heavier than Anson and Amir is 6kg lighter than Anson. If their total mass is 163kg , find the mass , in kg of Amir.

Answer 1

Answer:

Follow BODMAS (Brackets, Of, Division, Multiplication, Addition and Subtraction) rule to solve this question as per the order given below:

Step-1: Parts of an equation enclosed in 'Brackets' must be solved first inside 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.

⇒ 25 × [12 × (5 – 22)] ÷ (2 + 4)

⇒ 25 × [12 × (5 – 4)] ÷ 6

⇒ 25 × [12 × 1] ÷ 6

⇒ 25 × 12 ÷ 6

⇒ 25 × 2

⇒ 50

Answer 2

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The cabin and passengers have a total mass of 800 kg. The vertical distance between. B and C is 50 m. Calculate the increase of gravitational potential energy of the cabin and passengers when they move from B to C.