Question

(c) Find out the price of 2 kg iron and 5 kg newspaper.​

Answer 1

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Cost of 1 kg newspaper = Rs 5

Cost of 31 kg newspaper = Rs 5 × 31 = Rs 155

We do it in the following manner: 5 × 30 = 150 5 × 1 = 5 So, 150+5 155

• Cost of 42 kg newspaper = Rs 5 × 42

= Rs 210 We do it like this: 5 × 40 = 200 5 × 2 = 10 So, 200+10 210

Answer 2

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Cost of 1 kg newspaper = Rs 5

Cost of 31 kg newspaper = Rs 5 × 31 = Rs 155

: 5 × 30

= 150 5 × 1

= 5 So, 150+5 155

• Cost of 42 kg newspaper = Rs 5 × 42

= Rs 210 Ans.