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

Let the whole cake to be x

Rani ate = 2x/7

remaining part = x-2x/7 = 5x/7

Brother ate = 4x/7

total eaten part 2x/7+
4x/7 = 6x/7

remaining part = x-6/7=x/= 1/7
example: 1/7 part is left

Answer 2

Answer:

The correct answer is $1/7$.

Step-by-step explanation:

Given:

Rani ate 2/7 part of the cake while her brother Ravi ate 4/5 of the remaining.

To find: the remaining part of the cake left.

Step 1

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

Given that Rani ate $2 / 7$ part of a cake

$=1-(2 / 7)$

$&=(7-2) / 7$

$&=5 / 7$

Step 2

Ravi ate $4 / 5$ of the remaining cake

$=(4 / 5) \times(5 / 7)$

$=4 / 7$

Therefore, the part of the cake left

$=(5 / 7)-(4 / 7)$

$=1 / 7$

Therefore, the correct answer is $1/7$.

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