A’s weight is double of B’s weight which is 45 kg. Find the weight

1.	A’s weight is double of B’s weight which is 45 kg. Find the weight of C which is 10 more than the average weight of A and B?1. 76.5 kg2. 77.5 kg3. 70.5 kg4. 77 kg
Answer» Correct Answer - Option 2 : 77.5 kg Given: B’s weight = 45 kg A’s weight = 2 × B’s weight C’s weight = 10 + average weight of A and B Concept: Average weight = Total weight / Total persons Solution: B’s weight = 45 kg A’s weight = 2 × B’s weight A’s weight = 2 × 45 ⇒ 90 kg Average weight of A and B = (45 + 90) / 2 ⇒ 135 / 2 ⇒ 67.5 C’s weight = 10 + average weight of A and B = 10 + 67.5 = 77.5 kg ∴ C’s weight = 77.5 kg

A’s weight is double of B’s weight which is 45 kg. Find the weight of C which is 10 more than the average weight of A and B?1. 76.5 kg2. 77.5 kg3. 70.5 kg4. 77 kg

Answer» Correct Answer - Option 2 : 77.5 kg

Given:

B’s weight = 45 kg

A’s weight = 2 × B’s weight

C’s weight = 10 + average weight of A and B

Concept:

Average weight = Total weight / Total persons

Solution:

B’s weight = 45 kg

A’s weight = 2 × B’s weight

A’s weight = 2 × 45 ⇒ 90 kg

Average weight of A and B = (45 + 90) / 2 ⇒ 135 / 2 ⇒ 67.5

C’s weight = 10 + average weight of A and B

= 10 + 67.5

= 77.5 kg

∴ C’s weight = 77.5 kg

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A’s weight is double of B’s weight which is 45 kg. Find the weight of C which is 10 more than the average weight of A and B?1. 76.5 kg2. 77.5 kg3. 70.5 kg4. 77 kg

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