a$.$ How long do you estimate the time required to install the second pool?

hours. $($Enter your response rounded to two decimal places.$)$

A contractor is preparing a bid to install swimming pools at a new housing addition. The estimated time to build the first pool is $34$ hours. The contractor estimates

A $75$ percent learning rate.

Part $2$

a$.$ How long do you estimate the time required to install the second pool? $25\mathrm{.}50$ hours. $($Enter your response rounded to two decimal places.$)$

Part $3$

b$.$ How long do you estimate the time required to install the fourth pool?

hours. $($Enter your response rounded to two decimal places.$)$