This activity allocated to class IV during Get-Set-Go was Marble in Spoon Race. The class teacher of IV-Z bought 10 marbles more than the total number of students in her section. The shopkeeper gave her 30 extra marbles for free as well. On the way, the packet of free marbles got torn and a few marbles were lost. To know the exact number of marbles, she gave the chance of counting to both boys and girls of the class. The girls tried to count by counting the marbles into piles of 4, and were left over with 3 marbles. The boys tried to count by putting the marbles into piles of 7, and were left over with 1 marble. If the class strength is 40, could you calculate, how many marble does class IV -Z have ?
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Answer:ans is 15
Step-by-step explanation:total no of marbles having initially =40+10+30=80
Let x be the remaining marbles
1) caluculation by girls
x=4y+3
x=7z+1
On solving 4y-7z=-2
When y=3 and z=2, solution get solved
x= 4*3+3=15
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