15 files changed, 140 insertions, 0 deletions
diff --git a/1553/CH6/EX6.1/6Ex1.sce b/1553/CH6/EX6.1/6Ex1.sce
new file mode 100644
index 000000000..fb6ec4e9a
--- /dev/null
+++ b/1553/CH6/EX6.1/6Ex1.sce
@@ -0,0 +1,8 @@
+//Chapter 6 Ex 1
+
+clc;
+clear;
+close;
+n1=31; n2=37; n3=41; n4=43; n5=47;   //prime number between 30 and 50
+avg=(n1+n2+n3+n4+n5)/5;
+mprintf("The average of all prime numbers between 30 and 50 is %.2f",avg);
diff --git a/1553/CH6/EX6.10/6Ex10.sce b/1553/CH6/EX6.10/6Ex10.sce
new file mode 100644
index 000000000..3d339f2a1
--- /dev/null
+++ b/1553/CH6/EX6.10/6Ex10.sce
@@ -0,0 +1,10 @@
+//chapter 6 Ex 10
+
+clc;
+clear;
+close;
+n=3; avg=45; AB=40; BC=43;
+Sum=(avg*n);
+SumAB=AB*2; SumBC=BC*2;
+B=SumAB+SumBC-Sum;
+mprintf("The weight of B is %d kg.",B);
diff --git a/1553/CH6/EX6.11/6Ex11.sce b/1553/CH6/EX6.11/6Ex11.sce
new file mode 100644
index 000000000..ac0dfaa36
--- /dev/null
+++ b/1553/CH6/EX6.11/6Ex11.sce
@@ -0,0 +1,13 @@
+//chapter 6 Ex 11
+
+clc;
+clear;
+close;
+n=39; avg39=15;//average of 39 students 
+inc=3/12; //months converted to years
+avg40=avg39+inc;
+Sum39=avg39*n;
+Sum40=avg40*(n+1);
+teacherAge=Sum40-Sum39;
+mprintf("The age of teacher is %d years",teacherAge);
+
diff --git a/1553/CH6/EX6.12/6Ex12.sce b/1553/CH6/EX6.12/6Ex12.sce
new file mode 100644
index 000000000..7b24fbe55
--- /dev/null
+++ b/1553/CH6/EX6.12/6Ex12.sce
@@ -0,0 +1,10 @@
+//chapter 6 Ex 12
+
+clc;
+clear;
+close;
+n=10; inc=1.8;
+weightreplaced=53;
+totalinc=n*inc;
+weightNew=weightreplaced+totalinc;
+mprintf("The weight of new man is %d kg.",weightNew);
diff --git a/1553/CH6/EX6.13/6Ex13.sce b/1553/CH6/EX6.13/6Ex13.sce
new file mode 100644
index 000000000..69f563f7b
--- /dev/null
+++ b/1553/CH6/EX6.13/6Ex13.sce
@@ -0,0 +1,9 @@
+//chapter 6 Ex 13
+
+clc;
+clear;
+close;
+n=35; newN=7; incExp=42; perheadExp=1;
+originalAvg=(incExp+incExp*perheadExp)/(incExp-n);
+originalExp=originalAvg*n;
+mprintf("The original expenditure is Rs.%d",originalExp);
diff --git a/1553/CH6/EX6.14/6Ex14.sce b/1553/CH6/EX6.14/6Ex14.sce
new file mode 100644
index 000000000..6eec28e6a
--- /dev/null
+++ b/1553/CH6/EX6.14/6Ex14.sce
@@ -0,0 +1,8 @@
+//chapter 6 Ex 14
+
+clc;
+clear;
+close;
+score=87; inc=3; n=17;
+avg17= score-(n-1)*inc;
+mprintf("The average after 17th inning is %d",avg17);
diff --git a/1553/CH6/EX6.15/6Ex15.sce b/1553/CH6/EX6.15/6Ex15.sce
new file mode 100644
index 000000000..630e703bd
--- /dev/null
+++ b/1553/CH6/EX6.15/6Ex15.sce
@@ -0,0 +1,8 @@
+//chapter 6 Ex 15
+
+clc;
+clear;
+close;
+s1=84; s2=56;
+avgSpeed=(2*s1*s2)/(s1+s2);
+printf("The average speed of train is %1.1f km/hr",avgSpeed);
diff --git a/1553/CH6/EX6.2/6Ex2.sce b/1553/CH6/EX6.2/6Ex2.sce
new file mode 100644
index 000000000..b07cb08c2
--- /dev/null
+++ b/1553/CH6/EX6.2/6Ex2.sce
@@ -0,0 +1,9 @@
+//chapter 6 Ex 2
+
+clc;
+clear;
+close;
+n=40;
+Sum=n*(n+1)/2;  //formula for sum of first n natural numbers
+avg=Sum/n;
+mprintf("The required average is %.1f",avg); 
diff --git a/1553/CH6/EX6.3/6Ex3.sce b/1553/CH6/EX6.3/6Ex3.sce
new file mode 100644
index 000000000..9a1c43b76
--- /dev/null
+++ b/1553/CH6/EX6.3/6Ex3.sce
@@ -0,0 +1,12 @@
+//chapter 6 Ex 3
+
+clc;
+clear;
+close;
+a=[];
+for i=1:20
+    a(i)=7*i;
+end
+Sum=sum(a);
+Average=Sum/size(a,"r");
+printf("The average of first 20 multiples of 7 is %3.2f",Average);
diff --git a/1553/CH6/EX6.4/6Ex4.sce b/1553/CH6/EX6.4/6Ex4.sce
new file mode 100644
index 000000000..3ed9716c7
--- /dev/null
+++ b/1553/CH6/EX6.4/6Ex4.sce
@@ -0,0 +1,9 @@
+//chapter 6 Ex 4
+
+clc;
+clear;
+close;
+avg=27;
+nums=4;
+n=((avg*nums)-(1+2+3+4))/4; //addition of 4 consecutive numbers
+mprintf("The largest number is %d",n+6);
diff --git a/1553/CH6/EX6.5/6Ex5.sce b/1553/CH6/EX6.5/6Ex5.sce
new file mode 100644
index 000000000..67b7ee918
--- /dev/null
+++ b/1553/CH6/EX6.5/6Ex5.sce
@@ -0,0 +1,9 @@
+//chapter 6 Ex 5
+
+clc;
+clear;
+close;
+Atotal=36; Btotal=44;
+avgA=40; avgB=35;
+avg=(Atotal*avgA+Btotal*avgB)/(Atotal+Btotal);
+mprintf("The average weight of whole class is %.2f kilograms",avg);
diff --git a/1553/CH6/EX6.6/6Ex6.sce b/1553/CH6/EX6.6/6Ex6.sce
new file mode 100644
index 000000000..396672a7d
--- /dev/null
+++ b/1553/CH6/EX6.6/6Ex6.sce
@@ -0,0 +1,9 @@
+//chapter 6 Ex 6
+
+clc;
+clear;
+close;
+persons=9; extra=8;
+avgexp=(12*(persons-1)+extra)/(persons-1);
+total=9*avgexp;
+mprintf("The total money spent was Rs.%d",total);
diff --git a/1553/CH6/EX6.7/6Ex7.sce b/1553/CH6/EX6.7/6Ex7.sce
new file mode 100644
index 000000000..c5806e526
--- /dev/null
+++ b/1553/CH6/EX6.7/6Ex7.sce
@@ -0,0 +1,10 @@
+//chapter 6 Ex 7
+
+clc;
+clear;
+close;
+num=3; avg=44; 
+//let third number be x
+num3=(avg*num)/(1+3+3/2);
+num2=3*num3;
+mprintf("The largest number is %d",num2);
diff --git a/1553/CH6/EX6.8/6Ex8.sce b/1553/CH6/EX6.8/6Ex8.sce
new file mode 100644
index 000000000..6d89c9590
--- /dev/null
+++ b/1553/CH6/EX6.8/6Ex8.sce
@@ -0,0 +1,8 @@
+//chapter 6 Ex 8
+
+clc;
+clear;
+close;
+total=25; avg25=18; avg12first=14; avg12last=17;
+num13=(avg25*total)-((avg12first*12)+(avg12last*12));
+mprintf("The 13th number is %d",num13);
diff --git a/1553/CH6/EX6.9/6Ex9.sce b/1553/CH6/EX6.9/6Ex9.sce
new file mode 100644
index 000000000..c915ca68b
--- /dev/null
+++ b/1553/CH6/EX6.9/6Ex9.sce
@@ -0,0 +1,8 @@
+//chapter 6 Ex 9
+
+clc;
+clear;
+close;
+total=11; avg11=60; avg6first=58; avg6last=63;
+num6=(((avg6first*6)+(avg6last*6))-avg11*total);
+mprintf("The 6th number is %d",num6);