CAT 2016 Quantitative Ability

During a fundraiser event for the elderly people, apart from all the members of the organising committee, a huge number of volunteers also donated some amount for the noble cause The members of the organising committee made an average contribution of Rs. 1,100 and this sum comprised 88% of the total amount raised through the event The number of members in the organising committee was 40% more than the number of volunteers. Find the average contribution (in Rs.) made by the volunteers