Question

When loaded with cement blocks a lorry has a mass of 12000kg if the mass of the blocks is three times that of the empty lorry, find the mass of the blocks. Please give me the answer in hurry ​

Answer 1

Answer:

12000 x 3 = 36000kg

Step-by-step explanation:

Hope it will help you

Answer 2

Given: When loaded with cement blocks a lorry has a mass of 12000kg if the mass of the blocks is three times that of the empty lorry.

To Find: find the mass of the blocks carried by the lorry

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❒ Let the mass of empty lorry be x and the mass of the bricks be 3x

${ \underline{ \bf{ \bigstar \: According \: to \: the \: question : }}}$

• The mass of the lorry when loaded with the bricks equals 12000kg

${ \underline{ \frak{As \: we \: know \: that \dag}}}$

• The mass of loaded lorry = mass of bricks + mass of empty lorry

★ Here,

• Mass of loaded lorry = 12000kg
• Mass of bricks = 3x
• Mass of empty lorry = x

${ \underline{ \bf{ \bigstar \: Substituting \: the \: values \: we \: get \: : }}}$

$\\{ : \implies} \sf \: Mass _{(loaded \: lorry)} = \: Mass _{(bricks)} + Mass _{(empty \: lorry)} \\ \\ \\ \\ { : \implies} \sf \: 12000kg = 3x + x\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ \\ \\ { : \implies} \sf12000kg = 4x\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ \\ \\ { : \implies} \sf \: x = \cancel\frac{12000}{4} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ \\ \\ { : \implies} {\pink{ \underline{ \boxed{ \pmb{ \frak{x = 3000kg}}}} \star}}\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \:$

• Hence the mass of the empty lot is 300kg

★ Now,

• Let's find the mass of the blocks

★We know,

• Mass of the blocks = 3x

★ Substituting we get,

${ \purple{ \mapsto}} \tt \: Mass \: of \: blocks = 3x = 3(3000) = 9000kg$

Hence:

• The mass of the blocks = 9000kg

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