A trader buys 50kg rice at 120. He sells at 2.80 per kg. Profit % is 67% (B) 20% (C) 25% (D) 30%

Here's how to simplify the expression for question 57: Step 1: Distribute the numbers outside the parentheses. 5(3a − 2b) − 2(a + 4b) = (5 × 3a) − (5 × 2b) − (2 × a) − (2 × 4b); = 15a − 10b − 2a − 8b Step 2: Combine like terms (a terms with a terms, and b terms with b terms). = (15a − 2a) + (−10b − 8b); = 13a − 18b The simplified expression is 13a − 18b. Comparing this to the given options: (A) 13a − 18b (B) 15a − 10b (C) 13a − 2b (D) 3a − 6b The correct option is (A). The final answer is A.

A trader buys 50kg rice at 120. He sells at 2.80 per kg. Profit % is 67% (B) 20% (C) 25% (D) 30%

Here's how to simplify the expression for question 57: Step 1: Distribute the numbers outside the parentheses. 5(3a − 2b) − 2(a + 4b) = (5 × 3a) − (5 × 2b) − (2 × a) − (2 × 4b); = 15a − 10b − 2a − 8b Step 2: Combine like terms (a terms with a terms, and b terms with b terms). = (15a − 2a) + (−10b − 8b); = 13a − 18b The simplified expression is 13a − 18b. Comparing this to the given options: (A) 13a − 18b (B) 15a − 10b (C) 13a − 2b (D) 3a − 6b The correct option is (A). The final answer is A.

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Here's how to simplify the expression for question 57:

Distribute the numbers outside the parentheses.
$5(3a - 2b) - 2(a + 4b) = (5 \times 3a) - (5 \times 2b) - (2 \times a) - (2 \times 4b)$ $= 15a - 10b - 2a - 8b$
Combine like terms ( $a$ terms with $a$ terms, and $b$ terms with $b$ terms).
$= (15a - 2a) + (-10b - 8b)$ $= 13a - 18b$
The simplified expression is $13a - 18b$ .

Comparing this to the given options:
(A) $13a - 18b$
(B) $15a - 10b$
(C) $13a - 2b$
(D) $3a - 6b$

The correct option is (A).

The final answer is $\boxed{\text{A}}$ .

A trader buys 50kg rice at 120. He sells at 2.80 per kg. Profit % is 67% (B) 20% (C) 25% (D) 30%

Answer

Step-by-step solution

Distribute the numbers outside the parentheses.

Combine like terms ( $a$ terms with $a$ terms, and $b$ terms with $b$ terms).

Try one yourself

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More Mathematics Questions

A trader buys 50kg rice at 120. He sells at 2.80 per kg. Profit % is 67% (B) 20% (C) 25% (D) 30%

Answer

Step-by-step solution

Distribute the numbers outside the parentheses.

Combine like terms (aaa terms with aaa terms, and bbb terms with bbb terms).

Try one yourself

Still stuck on this one?

More Mathematics Questions

Combine like terms ( $a$ terms with $a$ terms, and $b$ terms with $b$ terms).