Question

A cyclist travels for 3 hours, travelling for the first half of the journey at 12 kmph and the second half at 15 kmph. Find the total distance he covered.
PLEASE FAST

Answer 1

Answer:

27km is covered...............

Answer 2

Answer:

27 km is covered

Percentage of Copper = 82.5%

Total Parts of Alloy = 7+33 => 40

% of Zinc = \begin{gathered}\sf{\dfrac{7}{40}\times 100 = \dfrac{7}{2}\times5=17.5\%}\\\end{gathered}

40

7

×100=

2

7

×5=17.5%

% of Copper = \begin{gathered}\sf{\dfrac{33}{40}\times100=\dfrac{33}{2}\times5=82.5\%}\\\end{gathered}

40

33

×100=

2

33

×5=82.5%

Therefore, the total percent adds up to 100%.

So,

% of Zinc = 17.5%

% of Copper = 82.5%

Hope it helps u