Question

Rani ate `2/7` part of a cake while her brother Ravi ate `4/5` of the remaining. Part of the cake left is ______.

Answer 1

Rani ate `2/7` part of a cake while her brother Ravi ate `4/5` of the remaining. Part of the cake left is `underlinebb(1/7)`.

Explanation:

Now, let us assume the total part of cake is 1.

Then, from the question, given that Rani ate `2/7` part of a cake = `1 - 2/7`

= `(7 - 2)/7`

= `5/7`

So, Ravi ate `4/5` of the remaining cake = `4/5 xx 5/7`

= `4/7`

Therefore, the part of the cake left = `5/7 - 4/7`

= `1/7`