Maths Answer the following (4 mark each) :

When they extract pulp from mango, it weighs $13$ of a mango. They have planned to extract pulp from $6000 \ kg$ mangoes in a month.
$1.$ How much mango-pulp will be prepared in a month ?
$2.$ Let's calculate for first $6 \ kg$ mangoes:
For purchase of mangoes $₹ 15$ per $kg$
For sale of mango - pulp $₹ 70$ per $kg$
If we extract mango-pulp from $6 \ kg$ mangoes, we get ............... $kg$ pulp.

The meeting of Women Amra Bank has just started. Madhuben is its chairman. This bank is established by $20$ members. Every member saves $₹ 25$ per month and deposit in the bank.
$1.$ How many rupees are collected by this group in every month $?$
$2. $ How many rupees will be collected in $10$ years $?$

Raj has $100. $ He spent fourth part of the amount to buy Langdo mango. He spent rest of three-fourth amount to buy Kesar mangoes.
$1. $ How many $kg$ 'Langdo' mango he had bought ?
$2. $ How many $kg$ 'Kesar' mango he had bought ?