Question

SOLVE THE FOLLOWING

11. Find the area of a square plot of side 23 cm 12. Cost of 10 apples is Rs 120. How many apples can be bought for Rs 607

13. Write the expression for the following cases a) 5 multiplied by x and then the product added to 15

b) 12 subtracted from Z

=

(2)

(2)

(2)

14. There are 102 teachers in a school of 3300 students. Find the ratio of the number of teachers to the number of students

(3)

15. A rectangular box has height h cm. Its length is 6 times the height and breadth is 10 cm less

than the length Express the length and the breadth of the box in terms of the height​

Answer 1

11) Side length = 23 cm

Area of plot = (side)²

= (23cm)² = 529 cm

12) Cost of 10 apples = Rs. 120

Cost of 1 apple = Rs. 120/10 = Rs. 12

Number of apples (n) with Rs. 607 = Rs. 12*n=607

n=50.58

Number of apples that can be bought is 50 (since a fraction of apple can't be bought)

considering that , amount left = Rs.607-(50*12)=Rs. 7

13) a) (5*x) + 15 = 5x+15

b) (z-12)

14) Number of teachers = 102

Number of students = 3300

Ratio of teachers to students = 102:3300

= 17:550

15) height = h cm

length = 6h cm

breadth = (6h-10) cm