**New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 7 Percentage and Its Applications Self Practice 8C Solution**

**(1) What percentage is:**

**(a) 7 of 70?**

**(b) 8 of 32?**

**(c) 19 of 25?**

**(d) 117 of 650?**

**(e) 180 of 300?**

**(f) 850 of 3400?**

**(g) 780 of 1950?**

**(h) 27 of 9?**

**(2) What percent is:**

**(a) 40 paise of Rs. 8**

**(b) Rs. 5.10 of Rs. 6?**

**(c) 400 ml of 1 L?**

**(d) 8.24 cm of 8 m?**

**(e) 6 s of 10 min?**

**(f) 18 h of 1 day?**

**(g) 900 kg of 1.5 tonne?**

**(3) 18 karat gold is a mixture of gold and another metal. 18 out of 24 parts are pure gold. Express the pure gold as a percentage of the the total.**

**Solution:**

**(4) A CD ROM has 700 megabytes of storage space. What per cent of the space is used by a file, that take up 154 megabytes?**

**(5) As per 2011 census, the population of Sikkim is 6,10,577 of which 3,23,070 are males. What percent of the total population of Sikkim are females? [You may use calculator for calculations].**

**Solution:**