Q. 65.0( 1 Vote )
A sum of Rs. x is divided equally among four children. If each child receives Rs. y, express y in terms of x.
Given: Rs. x is divided among 4 children equally.
amount received by each student
But, it is given that each child receives Rs. y.
Thus, the relation between y and x is
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The population of a village is 8000. Out of these, 80% are literate and of these literate people, 40% are women. Find the ratio of the number of literate women to the total population.NCERT - Exemplar Mathematics
A doctor reports blood pressure in millimetres of mercury (mm Hg) as a ratio of systolic blood pressure to diastolic blood pressure (such as 140 over 80). Systolic pressure is measured when the heart beats, and diastolic pressure is measured when it rests. Refer to the table of blood pressure ranges for adults.
Manohar is a healthy 37 years old man whose blood pressure is in the normal category.
A. Calculate an approximate ratio of systolic to diastolic blood pressures in the normal range.
B. If Manohar’s systolic blood pressure is 102 mm Hg, use the ratio from part (a) to predict his diastolic blood pressure.
C. Calculate ratio of average systolic to average diastolic blood pressure in the prehypertension category.NCERT - Exemplar Mathematics
Population of Rajasthan = 570 lakhs and population of UP = 1660 lakhs. Area of Rajasthan = 3 lakh km2 and area of UP = 2 lakh km2.
(i) How many people are there per km2 in both these States?
(ii) Which State is less populated?NCERT Mathematics