Question

9. If 280 tennis balls cost 1960. Find the cost of 4 dozen balls.​

Answer 1

Cost of 280 tennis balls = ₹ 1969

So,

Cost of 1 tennis ball = 1969 ÷ 280

= ₹ 7

1 dozen = 12

4 dozen balls = 12 × 4

= 48 balls

So,

Cost of 4 dozen balls = 7 × 48

= [₹ 336] - Ans.

So,

If 280 balls cost ₹ 1960, so, 4 dozen balls cost ₹ 336.

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Answer 2

Answer:

280 tennis balls cost 1960.

1 tennis ball = 1960/280 = rs 7

4 dozen= 4 x 12 = 48 balls

cost of 48 balls = 48 x 7

= rs 336

Explanation:

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