Mathematics
Algebra
4 items cost Rs. 140 each and 5 items cost Rs. 240 each. What is the weighted average cost per item?
A. 190
B. 1760/9
C. 380
D. 9
Correct Answer: B
Weighted average=total cost/total items.
Mathematics
Algebra
3 items cost Rs. 120 each and 4 items cost Rs. 220 each. What is the weighted average cost per item?
A. 340
B. 7
C. 1240/7
D. 170
Correct Answer: C
Weighted average=total cost/total items.
Mathematics
Algebra
2 items cost Rs. 100 each and 3 items cost Rs. 200 each. What is the weighted average cost per item?
A. 5
B. 300
C. 150
D. 160
Correct Answer: D
Weighted average=total cost/total items.
Mathematics
Algebra
A father is 24 years older than his son. In 7 years, the father will be twice the son’s age. What is the son’s current age?
A. 16
B. 17
C. 19
D. 18
Correct Answer: B
x+24+7=2(x+7); x=17.
Mathematics
Algebra
A father is 24 years older than his son. In 8 years, the father will be twice the son’s age. What is the son’s current age?
A. 15
B. 16
C. 17
D. 18
Correct Answer: B
x+24+8=2(x+8); x=16.
Mathematics
Algebra
A father is 24 years older than his son. In 9 years, the father will be twice the son’s age. What is the son’s current age?
A. 16
B. 15
C. 17
D. 14
Correct Answer: B
x+24+9=2(x+9); x=15.
Mathematics
Algebra
A father is 24 years older than his son. In 10 years, the father will be twice the son’s age. What is the son’s current age?
A. 16
B. 15
C. 13
D. 14
Correct Answer: D
x+24+10=2(x+10); x=14.
Mathematics
Algebra
A father is 24 years older than his son. In 11 years, the father will be twice the son’s age. What is the son’s current age?
A. 12
B. 13
C. 14
D. 15
Correct Answer: B
x+24+11=2(x+11); x=13.
Mathematics
Algebra
A father is 24 years older than his son. In 12 years, the father will be twice the son’s age. What is the son’s current age?
A. 14
B. 13
C. 12
D. 11
Correct Answer: C
x+24+12=2(x+12); x=12.
Mathematics
Algebra
A father is 24 years older than his son. In 13 years, the father will be twice the son’s age. What is the son’s current age?
A. 13
B. 11
C. 12
D. 10
Correct Answer: B
x+24+13=2(x+13); x=11.
Mathematics
Algebra
A father is 24 years older than his son. In 14 years, the father will be twice the son’s age. What is the son’s current age?
A. 11
B. 12
C. 10
D. 9
Correct Answer: C
x+24+14=2(x+14); x=10.
Mathematics
Algebra
A father is 24 years older than his son. In 15 years, the father will be twice the son’s age. What is the son’s current age?
A. 8
B. 10
C. 11
D. 9
Correct Answer: D
x+24+15=2(x+15); x=9.
Mathematics
Algebra
A father is 24 years older than his son. In 16 years, the father will be twice the son’s age. What is the son’s current age?
A. 8
B. 10
C. 7
D. 9
Correct Answer: A
x+24+16=2(x+16); x=8.
Mathematics
Algebra
Two numbers differ by 7 and their sum is 35. What is the smaller number?
A. 13
B. 15
C. 14
D. 16
Correct Answer: C
x+(x+7)=35; x=14.
Mathematics
Algebra
Two numbers differ by 7 and their sum is 33. What is the smaller number?
A. 15
B. 12
C. 14
D. 13
Correct Answer: D
x+(x+7)=33; x=13.
Mathematics
Algebra
Two numbers differ by 7 and their sum is 31. What is the smaller number?
A. 14
B. 13
C. 12
D. 11
Correct Answer: C
x+(x+7)=31; x=12.
Mathematics
Algebra
Two numbers differ by 7 and their sum is 29. What is the smaller number?
A. 11
B. 13
C. 12
D. 10
Correct Answer: A
x+(x+7)=29; x=11.
Mathematics
Algebra
Two numbers differ by 7 and their sum is 27. What is the smaller number?
A. 11
B. 10
C. 9
D. 12
Correct Answer: B
x+(x+7)=27; x=10.
Mathematics
Algebra
Two numbers differ by 7 and their sum is 25. What is the smaller number?
A. 11
B. 8
C. 10
D. 9
Correct Answer: D
x+(x+7)=25; x=9.
Mathematics
Algebra
Two numbers differ by 7 and their sum is 23. What is the smaller number?
A. 9
B. 10
C. 8
D. 7
Correct Answer: C
x+(x+7)=23; x=8.