Question

12. W
On decreasing a number by 18 it becomes 697. Find the number
12. Mr. Khanna spent 83% of his salary and saved 1870. Calculate his monthly salary
in a school. 38% of the students are girls. If the number of boys is 1023, find the total
strength of the school.
JI​

Answer 1

Answer:

a) 715 , b) 11000 , c) 1650

Step-by-step explanation:

A) x-18= 697

x = 697+18

x = 715

B) 17% = 1870

1% = 110

So, 100% = 110 × 100 = 11000

C) Boys = 62% = 1023

1% = 1023 ÷ 62 = 16.5

100% = 16.5 × 100 = 1650

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