**New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 7 Ratio and Proportion and Unitary Method Self Practice 7C Solution**

**(1) If 30 m of cloth cost Rs. 2400, what is the cost of 50 m cloth?**

**(2) If 8 ball pens cost Rs. 40, how much will 20 ball pens of the same kind will cost?**

**(3) Find the price of 744 articles at the rate of Rs. 60.25 a dozen.**

**(4) If the wages of 15 men for 8 days are Rs. 60,000, how much would they receive for 14 days?**

**(5) If a car goes 45 m in 3 seconds, how far does it go in 5 seconds? How long does it take in going 120 m?**

**(6) If 48 men have ration for 16 days, how long will the food last, if a rainforcement of 16 men arrives?**

**(7) How long will 50 men take to do the same job, that 40 men do in 25 days?**

**(8) If 10 kg of mangoes cost Rs. 550, how much will 27 kg cost? How many kilograms of mangoes can be bought for Rs. 1925?**

**(9) A garrison of 1200 men has provisions for 60 days. How long will they last, if the garrison (a) is reduced to 600 men; (b) reinforced by 800 men?**

**Solution Num. 1 to 9:**

**(10) On a certain map, 2 cm represent 1 km. What area foes 20 sq cm on the map represent?**

**(11) The greatest safe load for a lift is 14 men, each weighing 80 kg. How many people, each weighing 70 kg, can it take safely?**

**(12) Five turns of the winder of my watch, keeps it going for 15 hours, What is the effect of 9 turns?**

**Solution Number 10, 11 & 12:**

**(13) 24 men can repair a road in 15 days. How long will it take 20 men to do so, if all, work at the same rate?**

**(14) I have enough money to take a 24 days holiday, If i spend Rs. 125 a day. How long a holiday can I take, if I spend Rs. 150 a day?**

**(15) A man walks 110 m in a minute. How long will he take to walk 26.4 km?**

**Solution Number 13, 14 & 15:**

Thanks for your help ☺️