Question

Ronny read for 2.75 hours yesterday. His older brother read for 1.18 hours and his younger brother read for 0.43 hours. How much longer did Ronny read than his two brothers combined? 1.14 hours 1.57 hours 1.61 hours 2.32 hours

Answer 1

hello there
it is A because add 1.18 and 0.43 to get 1.61 then subtract 2.75-1.61 is 1.14
~hope i help~

Answer 2

The time they read together, is the sum of their individual study time.

Ronny read 1.14 hours longer than her brothers combined

The given parameters are:

$\mathbf{Ronny = 2.75\ hours}$

$\mathbf{Older\ Brother= 1.18\ hours}$

$\mathbf{Younger\ Brother= 0.43\ hours}$

The combined time her brothers studied is:

$\mathbf{Both = Older + Younger}$

Substitute known values

$\mathbf{Both = 1.18\ hours + 0.43\ hours}$

Evaluate like terms

$\mathbf{Both = 1.61 \ hours}$

The time Ronny read longer is calculated as follows:

$\mathbf{Time = Ronny- Both}$

Substitute known values

$\mathbf{Time = 2.75\ hours - 1.61\ hours}$

Evaluate like terms

$\mathbf{Time = 1.14\ hours}$

Hence, Ronny read 1.14 hours longer than her brothers combined

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