4. A stenographer takes 90 minutes to type 23 pages. How long will he take to type 69 pages?
5. The weight of 12 identical balls is 3.2 kg. What will be the weight of 18 such balls?
6. 500 men have provisions for 21 weeks. 25 men joined them. How long will the provisions last?
Answers
Answer:
4. ᵖᵃᵍᵉˢ ᵗⁱᵐᵉ(ᵐⁱⁿᵘᵗᵉ)
23 = 90
1 = 90/23
69 = 90/23×69
= 90×3 =. 270
stenographer needs 270 minutes or 4 1/2 hours to type 69 pages
5. Number of balls. weight
12. =. 3.2 kg
1. =. 3.2/12
18. =. 3.2/12×18
= 4.8 kg
6. provision for 500 man = 21 weeks(147 days)
provision for 1 man. = 147×500 days
provision for 525 man = 147×500/525
=. 140 days
provision for 525 man are 140 days or 20 weeks