21/2 tonnes of sand are to be shared between a number of Builders one of them received 4/7 of the total and the remaining sand is shared by the 3 builders how much does the fourth builder receive and how much sand does each of the other three builders receive?
Answers
Answer:
Amount of sand received by the fourth builder= 6 tonnes of sand
Amount of sand received by each of the three builders= 1÷2 tonnes of sand
Explanation:
The number of tonnes of sand received by the fourth builder is (4÷7)×total tonnes of the sand
Amount of sand received by the fourth builder = (4÷7)×(21÷2)
=6 tonnes
Amount of tonnes of sand remaining= Total sand- sand given to the fourth builder
=(21÷2)-6
= 3÷2
Amount of sand received by each of the three builders=(3÷2)×(1÷3) tonnes of sand
Answer:
Share of 3 builders = 1.5 tonnes each
Share of 4th builders = 4.5 tonnes
Explanation:
Total amount of sand = 21/2 = 10.5 tonnes
Total number of builders = 4
Share of 4th builder = 4/7th of total sand
= 4/7 x 10.5
= 6 tonnes
Remaining sand = 10.5 - 6 = 4.5 tonnes
Remaining sand has to be shared between three builders, hence share of each builder = 4.5/3 = 1.5 tonnes