How do I write the equation for this problem in order to solve it.I can solve it as long as someone shows me how to get the equation.

(1)Science. Solve the following application. Jose rode his trail bike for 10miles. Two-thirds of the distance was over a mountain trail. How long is the mountain trail?

(2)Statistics. In a weekend baseball tournament, Joel had 4hits in 13times at bat. That is , he hit safely 4/13 of the time. Write the decimalequivalent for Joel's hitting, round to three decimal places.(that number is joels batting average)

2/3 of 10=mountain trail distance.

of means times.

divide 4 by 13.

huh?

A box holds 24 cans that each have a diameter of 5 inches and a height of 8 inches. Describe a box that would be large enough to hold the cans. Waht is the volume in cubic inches waht is the surface are in square inches.