Question

10. An amament is made of gold and copper and weighs 52 grams. It of its part
is copper, find the weight of pure gold in it.​

Answer 1

Answer:

Step-by-step explanation:

2/13 ×52=2×4=8

52-8=44 gram pure gold

Answer 2

They are very useful in modern generation . Because nowadays roads are fully blocked with vehicles . So, many airplanes with low cost should be provided to people and to near distances . also aeroplanes should be provided to each districts and states for better functioning of city . Air ways nowadays are very useful and they save time . They are really a gift from the wright brothers who invented them . In the olden age people only saw the birds and saw them flying all over sky . But nowadays even people are flying not only I aeroplanes but also in various fields such as astronaut , war machines as aeroplanes , jet , helicopter , pilot . And airways are used for enjoyment too such as parachute ,paragliding, scuba diving , and many more


So in my opinion airways are having a vast use . We can use them ion future I guess .